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On 2021-08-23T11:54:27+00:00 Anjeyelf wrote:

Many people in Support Forum are reporting problems with a 'blank' calendar.
This may be google or other imported calendars, but it may also be the default 
Home calendar.
Sample list:
https://support.mozilla.org/en-US/questions/1347913
https://support.mozilla.org/en-US/questions/1347467
https://support.mozilla.org/en-US/questions/1347710
https://support.mozilla.org/en-US/questions/1347772

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/0

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On 2021-08-23T12:15:16+00:00 Vseerror wrote:

There are indeed many reports of issues, even just in the last couple
days.  Perhaps these need mention in a version 91 FAQ?

https://www.reddit.com/r/Thunderbird/comments/p7y07r/gmail_calendar_and_contact_sync_in_thunderbird_91/
https://support.mozilla.org/en-US/questions/1347759

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/1

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On 2021-08-23T13:04:42+00:00 Mkmelin+mozilla wrote:

Seems to me, the problems are very likely about provider for google
calendar, and potentially other add-ons being incompatible.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/2

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On 2021-08-26T08:56:44+00:00 Mkmelin+mozilla wrote:

Seems provider for google calendar is falsely claiming compatibility
with 91? Can we disable in that case?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/3

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On 2021-08-26T10:15:28+00:00 R-john-w wrote:

(In reply to Magnus Melin [:mkmelin] from comment #3)
> Seems provider for google calendar is falsely claiming compatibility with 91? 
> Can we disable in that case?

Done.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/4

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On 2021-08-26T12:50:28+00:00 R-john-w wrote:

*** Bug 1726483 has been marked as a duplicate of this bug. ***

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/5

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On 2021-08-26T16:51:39+00:00 W-mm wrote:

So,
    Will the issue Google Calendar be 'fixed' in a subsequent release, and 
would someone be kind enough to notify me( and everyone else) :-) ?


and to repeat
a welcome addition to Bugzilla would be a check box to 'opt in to email 
notifications' when someone posts a new comment !

:-)

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/6

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On 2021-08-26T16:55:56+00:00 Mkmelin+mozilla wrote:

For the add-on, that's up to the add-on author. Thunderbird core can
access google calendars just fine.

Isn't the default for bugzilla to send you emails on comments? If it's
not sending, see your bugzilla account page and make sure you opt in for
it.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/7

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On 2021-08-26T17:17:33+00:00 W-mm wrote:

Howdy Magnus, John et al
                           As I reported in a another Bug, concurrently that 
John responded to:
                          When I downloaded and upgraded from V78 to V91 my 
Calendar and subs( 3 of them were all LISTED , but no data was displayed)
There were 'Enable' buttons next to each sub calendar and I clicked each to no 
avail......rebooted , retried multiple times.   
I had to use W7 System Restore to bring me back to V78 and get my Data back

So.......when this is Fixed....please advise so I know I can update to V91 or?
Thank you

If I HAVE to renter my Calendar(s) manually....please let me know !

PS  I see Email Preferences
Can you kindly instruct me on how to be included in any updates for ONLY this 
BUG !
I'm just a USER /reporter for this bug !
https://bugzilla.mozilla.org/userprefs.cgi?tab=email

thank you

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/8

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On 2021-08-26T18:16:06+00:00 Vseerror wrote:

(In reply to Matt Miller from comment #8)
> PS  I see Email Preferences
> Can you kindly instruct me on how to be included in any updates for ONLY this 
> BUG !

"ONLY" is not easily possible. (But you are only CC on two bugs so I fail to 
see the concern about getting mail for other bugs)
* Go to https://bugzilla.mozilla.org/userprefs.cgi?tab=email
* click "enable all bugmail"
* go to the bottom and click "submit changes"

> please advise so I know I can update to V91 or?

When you see an offer **FROM THUNDERBIRD* to automatically update. We
can't predict when that will be.

But none of this helps you with https://github.com/kewisch/gdata-
provider/issues/194   You'll just have to wait and check when the author
makes the new version available.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/9

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On 2021-08-27T03:45:05+00:00 W-mm wrote:

Thank you Magnus and Wayne.........
      I'm a little 'gun shy' and I'm happy with V78
so Maybe I'll stay put for awhile or until Gmail doesn't 'like' the Security in 
v78

PS  the only Lightning addon I have that WAS needed for my Calendar  is " 
Provider for Google Calendar"
Are you now saying that that add on is NOT needed anymore, and IS my problem?!

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/10

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On 2021-08-27T06:30:12+00:00 Mkmelin+mozilla wrote:

Provider is not needed for handling calendars anymore. If you use tasks,
for those you need the provider since google doesn't expose them in a
standard format.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/11

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On 2021-08-27T07:53:51+00:00 Unicorn-consulting wrote:

(In reply to Matt Miller from comment #10)
> Thank you Magnus and Wayne.........
>       I'm a little 'gun shy' and I'm happy with V78

91 does have a lot of things to like (once you find them)

> so Maybe I'll stay put for awhile or until Gmail doesn't 'like' the
Security in v78

It is not the security in Google you need to worry about,  it is yours.
See https://www.mozilla.org/en-US/security/known-
vulnerabilities/thunderbird/

> PS  the only Lightning addon I have that WAS needed for my Calendar  is " 
> Provider for Google Calendar"
> Are you now saying that that add on is NOT needed anymore, and IS my 
> problem?! 

That would be the case.  It has not been needed for some years really. I
have been struggling since about 2012 to understand really what the
provider offers that is not available using caldav other than the
simplicity that the Thunderbird 91 inbuilt calendar detection now
provides.

This blog post in 2013 is about Google caldav and Lightning and was
written by the guy that maintains the gdata provider.
https://blog.mozilla.org/calendar/2013/09/google-is-changing-the-
location-url-of-their-caldav-calendars/ so it has not been needed since
then at least.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/12

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On 2021-08-27T12:50:28+00:00 W-mm wrote:

Thank you again Magnus
     I had no clue that TB was under attack........
but having said that................what I was referring to is to be able to 
use TB with Gmail

One has to set Gmail to ALLOW for a 'Less Secure App' !
And even with that...........if one doesn't keep up with the TB updates, then 
one can find themselves not being able to reach the gmail server
because gmail has 'changed' their Security Protocols!

Is there any consideration being made to make TB secure enough in Gmails
terms, to make it 'work' without having to tell gmail its a 'less secure
app' ?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/13

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On 2021-08-27T13:28:38+00:00 Mkmelin+mozilla wrote:

I believe it mostly goes away if you move to OAuth2 authentication (which is 
the default).
They may still try to scare you into using their web services... but what can 
we do about such marketing ploys.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/14

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On 2021-08-27T13:33:40+00:00 Thee-chicago-wolf wrote:

(In reply to Matt Miller from comment #13)
> Is there any consideration being made to make TB secure enough in Gmails 
> terms, to make it 'work' without having to tell gmail its a 'less secure app' 
> ?

This is a Google/GMail thing, not so much a TB thing. Google/GMail would
LOVE for email to just die and / or have their customers move to Webmail
through a browser. It's a control thing. IMHO, Google CONSTANTLY wants
to undermine established standards and move users away from ANYTHING
that takes control away from Google's product and puts full control in a
user's hands.

The whole "less secure app" is a marketing scare tactic by Google to
make users think something that is perfectly secure is not. It's the
method of access they're trying to hamper. I mean, why else would you
have to flip a switch in GMail "Settings" through the web UI in order to
access your IMAP/POP3 with a 3rd party client yet the GMail Android app
happily access your IMAP mail without needing to flip said switch?
Totally sus! Just sayin'.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/15

------------------------------------------------------------------------
On 2021-08-27T13:34:04+00:00 Thee-chicago-wolf wrote:

(In reply to Magnus Melin [:mkmelin] from comment #14)
> I believe it mostly goes away if you move to OAuth2 authentication (which is 
> the default).
> They may still try to scare you into using their web services... but what can 
> we do about such marketing ploys.

+1

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/16

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On 2021-08-27T15:39:45+00:00 Anjeyelf wrote:

This is issue is not just a gmail google issue.  
The  'Home'  calendar is also lost. People are needing to do all sorts of work 
arounds - assuming they still have a backup.
eg: https://support.mozilla.org/en-US/questions/1347913#answer-1437750

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/17

------------------------------------------------------------------------
On 2021-08-27T16:09:03+00:00 P-rich wrote:

Confirm, it occurred using TB internal calendar (formerly Lightning) not
any external calendar.

Reinstalling TB 78, restoring profile, then exporting calendar and
importing that into TB 91 recovered it.

It's an update problem.

Richard

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/18

------------------------------------------------------------------------
On 2021-08-27T18:43:12+00:00 R-john-w wrote:

I have created a test profile in TB78 with
- gmail account
- google provider with 5 calenders
- local home calendar

I upgraded that profile to TB91 and home calendar was available, google
calendar where disabled (as the provider is not compatible with TB91). I
also tried to add entries to my home calendar and everything worked as
expected.

@rich & @anje (regarding broken home calendar after upgrade): 
- What other add-ons have you installed during upgrade?
- What OS are you on?
- Are you able to provide steps to reproduce this, starting with a fresh TB78 
profile and prepare that in a way that an upgrade to TB91 breaks the home 
calendar?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/19

------------------------------------------------------------------------
On 2021-08-27T19:06:47+00:00 P-rich wrote:

John,

Add-on's (Note, only using internal calendar, never used any ext
calendar)

Signature Switch, Quote Colors, Remove Duplicate Messages

OS: Win 10 21H1 (up-to-date)

"Home" calendar is listed but all contents are blank after upgrade.
Can't export calendar.

Tried the upgrade again (restored profile from backup/reinstalled TB
78). Same issue

Restored profile from TB 78, exported calendar.

In TB 91 deleted Home cal, imported calendar as new name (would not let
me use Home)

I did not create a new profile or calendar and try to upgrade using that
as the TB 78 profile and calendar were fully functional and I needed all
the data

Richard

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/20

------------------------------------------------------------------------
On 2021-08-27T21:05:51+00:00 R-john-w wrote:

I created a fresh 78 profile, installed the 3 add-ons, put some events
in my home calendar, and upgraded to 91. Everything works.

Richard, could you do the following for me?
1. Create a fresh TB78 profile
2. Setup your imap account
3. Install the 3 add-ons
4. Import the calendar which you had extracted from your backup
5. Load the profile with TB91

What happens?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/21

------------------------------------------------------------------------
On 2021-08-28T01:59:17+00:00 Unicorn-consulting wrote:

(In reply to Matt Miller from comment #13)

> One has to set Gmail to ALLOW for a 'Less Secure App' !

No one does not!  Thunderbird has supported oAuth authentication for
Google for some time now. IMAP/SMTP since Thunderbird 40 and POP since
Thunderbird 74.

> And even with that...........if one doesn't keep up with the TB updates, then 
> one can find themselves not being able to reach the gmail server
> because gmail has 'changed' their Security Protocols!

That is always going to be a possibility. But oAuth makes it less
likely.  There was an issue on the 68 release for instance, Bug 1592407

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/22

------------------------------------------------------------------------
On 2021-08-28T04:04:32+00:00 P-rich wrote:

(In reply to John Bieling (:TbSync) from comment #21)

John, I'm out-of-town until late Monday and don't have the exported
calendar file with me.

Richard
========================================

> I created a fresh 78 profile, installed the 3 add-ons, put some events in my 
> home calendar, and upgraded to 91. Everything works.
> 
> Richard, could you do the following for me?
> 1. Create a fresh TB78 profile
> 2. Setup your imap account
> 3. Install the 3 add-ons
> 4. Import the calendar which you had extracted from your backup
> 5. Load the profile with TB91
> 
> What happens?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/23

------------------------------------------------------------------------
On 2021-08-29T14:15:54+00:00 W-mm wrote:

Dear et al
                re TB and Gmail and Goggle Calendar
I've been a Pro Guru and user for 26 years.  When Netscape Browser and Mail 
came out 20+ years ago, I was one of the first users
I'm not a Programmer and I salute you for TB !!! !!!!!!!!!!!!!!!!!!!!!!
But, I'm not a slouch either.

I set up new machines and new users with TB all the time.
Even with OAuth in my experience,  the ' Less Secure App '  BS is ALWAYS NEEDED 
!  
With Outlook...its NOT !
With Iphone IOS Mail or Outlook IOS, there is NO Problem !

And, I disagree, that Google is trying to force users to use Webmail !
It just seems that Google doesn't like Mozilla !!!! ????

PS The auto config sometimes works and sometimes not ;-(
If not, I usually copy my TB settings using my oauth settings and my ports to 
get TB to handshake with Gmail

Be all that as it may...........  If Outlook is 'excepted' by Gmail to work 
without the "less secure app' protocol
I'm just asking if its not to difficult, to make TB 'exceptable' to Gmail 
If its too much of a hassle........Now that I know about the ' less secure app' 
 HOOP, I can live with it!

And back to the Google Calendar
    I'm humbly suggesting, that why release a NEW TB version without a MESSAGE 
warning Lightning users to disable Google Provider if thats what is needed to 
make it work?!

Again....my HATS OFF to all you Programmers, as I've NO Programming Skills and 
I salute you, as I LOVE TB !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
THANK YOU :-)  !!!!!!!!!!!!!!!

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/24

------------------------------------------------------------------------
On 2021-08-30T08:24:57+00:00 R-john-w wrote:

> And back to the Google Calendar
I'm humbly suggesting, that why release a NEW TB version without a MESSAGE 
warning Lightning users to disable Google Provider if thats what is needed to 
make it work?!

An updated version of the provider is in the making and it is now marked
by the compatibility check add-on [1], that it is currently not
compatible with TB91. So if you install that compatibility check add-on
in your TB78, it will check for you if it is safe to update to TB91 or
not.

[1] https://addons.thunderbird.net/addon/addon-compatibility-check/

General information: We will not be able to manually "convert" calendars 
created/managed by the google provider add-on (which is using a proprietary 
google API to get all the data, including tasks) to CalDAV calendars managed by 
Thunderbird directly (which does not support tasks, because Google does not 
provide that info via CalDAV). If you want to switch from one method to the 
other, you will have to do that on your own:
* Remove old google calendars
* Remove provider add-on
* Add google calendars as CalDAV

This is not really related to the upgrade from TB78 to TB91.

> Even with OAuth in my experience, the ' Less Secure App ' BS is ALWAYS
NEEDED !

That is really not true. See the attached image below.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/25

------------------------------------------------------------------------
On 2021-08-30T08:26:05+00:00 R-john-w wrote:

Created attachment 9238456
grafik.png

Access to Google from Thunderbird does not require a dedicated app
password (a.k.a less secure app access).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/26

------------------------------------------------------------------------
On 2021-08-31T17:03:50+00:00 W-mm wrote:

HI again John
         Forgive my stupidity,  but you're not saying that my Google Calendar 
in Google online has to be deleted? and then recreated?
You're just saying to manually remove then in TB, and then re-import them into 
V91 as Caldav
Correct?

And BTW....WHY?!   Why not leave it as it was.....working  PERFECTLY ?!

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/27

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On 2021-08-31T17:09:44+00:00 W-mm wrote:

And John
     re 'Less Secure App' access or not to gmail via TB

Then I MUST be doing something wrong as I just set up TB on a W10 machine a 
month ago and GMAIL STILL required 'Less Secure App' setup 
to make TB work !

I can't remember if I used auto config or I manually set it up?
I always use Auto config in TB or Outlook as of course thats easier!

So I don't remember if it was OAuth or not! 
You were saying earlier that THAT is the issue?!

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/28

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On 2021-08-31T17:23:34+00:00 W-mm wrote:

PS  Just found this on Github
https://github.com/kewisch/gdata-provider/files/7071662/gdata-provider-91.0.0pre1.zip

After installing "gdata-provider-91.0.0pre1" my calendar is working
again.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/29

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On 2021-08-31T17:26:59+00:00 R-john-w wrote:

(In reply to Matt Miller from comment #29)
> PS  Just found this on Github
> https://github.com/kewisch/gdata-provider/files/7071662/gdata-provider-91.0.0pre1.zip
> 
> After installing "gdata-provider-91.0.0pre1" my calendar is working again.

That is not yet released and has a serious bug. Please remove it to. It
has not even passed review!

I will get to your other questions later.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/30

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On 2021-08-31T17:56:08+00:00 W-mm wrote:

Hi John
             Yikes.....Seems to be working !!!

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/31

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On 2021-08-31T18:35:51+00:00 R-john-w wrote:

(In reply to Matt Miller from comment #31)
> Hi John
>              Yikes.....Seems to be working !!!

It is your decision. I warned you. I cannot do more than that. I
originally suggested staying on TB78 until an official version of the
provider for TB91 has been released.

> Forgive my stupidity, but you're not saying that my Google Calendar in Google 
> online has to be deleted? and then recreated?
You're just saying to manually remove then in TB, and then re-import them into 
V91 as Caldav
Correct?

Correct.

> And BTW....WHY?! Why not leave it as it was.....working PERFECTLY ?!

**If** you want to switch away from the provider to the built-in CalDAV
support, you would have to do the listed steps. But I suggest to leave
it as it was and just wait for the official version of the google
provider for TB91.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/32

------------------------------------------------------------------------
On 2021-08-31T19:04:48+00:00 P-rich wrote:

(In reply to rich from comment #23)
> (In reply to John Bieling (:TbSync) from comment #21)
> 
> John, I'm out-of-town until late Monday and don't have the exported calendar 
> file with me.

I'm back...

Did that. 91.0.3 opens the calendar imported into 78.13 (was prev using
78.12 but it auto-updated on me...)

(Reminder) I'm using local calendars not net...

Richard

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/33

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On 2021-09-02T05:57:30+00:00 R-john-w wrote:

(In reply to rich from comment #33)
> (In reply to rich from comment #23)
> > (In reply to John Bieling (:TbSync) from comment #21)
> > 
> > John, I'm out-of-town until late Monday and don't have the exported 
> > calendar file with me.
> 
> I'm back...
> 
> Did that. 91.0.3 opens the calendar imported into 78.13 (was prev using  
> 78.12 but it auto-updated on me...)
> 
> (Reminder) I'm using local calendars not net...
> 
> Richard

Hm, so it is not something specifically IN that calendar that caused the
upgrade to fail. I am running out of ideas.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/34

------------------------------------------------------------------------
On 2021-09-02T06:08:09+00:00 R-john-w wrote:

Regarding google calendars: The google calendar provider for TB91 has just been 
released:
https://addons.thunderbird.net/addon/provider-for-google-calendar/versions/

That should fix all the google calendar related issues mentioned in this
bug.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/35

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On 2021-09-02T16:05:22+00:00 P-rich wrote:

(In reply to John Bieling (:TbSync) from comment #34)
> (In reply to rich from comment #33)
> > (In reply to rich from comment #23)
> > > (In reply to John Bieling (:TbSync) from comment #21)

John,

> Hm, so it is not something specifically IN that calendar that caused
the upgrade to fail. I am running out of ideas.

Maybe rephrase that...

Not something in the exported calendar but maybe...

Something in the references to the calendar (as opposed to the calendar
data itself)

or

Export "cleaned it up" meaning there is something in the data, but it
was skipped in the export...

Richard

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/36

------------------------------------------------------------------------
On 2021-09-08T11:20:03+00:00 Anjeyelf wrote:

Still getting reports relating to the Home calendar - loss of data upon update 
to 91 - not working:
https://support.mozilla.org/en-US/questions/1349601
User says:
> To start with, after the update my main Calendar has completely disappeared 
> taking with it very important upcoming appointments. In addition to that if I 
> create an event all the data entered does not appear in the relevant day in 
> the calendar and it will also not allow me to import any future events from 
> other calendars.

In addition to discovering Home calendar blank - people also reporting
they cannot retain added events which is not the same as this bug but
I'm offering that bug link: bug 1729664

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/37

------------------------------------------------------------------------
On 2021-09-08T11:34:19+00:00 Vseerror wrote:

(In reply to Anje from comment #37)
> Still getting reports relating to the Home calendar - loss of data upon 
> update to 91 - not working:
> https://support.mozilla.org/en-US/questions/1349601

Has it been confirmed that the reporter is NOT using the provider add-
on?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/38

------------------------------------------------------------------------
On 2021-09-08T12:49:16+00:00 Richard Leger wrote:

See also... 
https://thunderbird.topicbox.com/groups/beta/T948a3b1f2f93c62f/local-calendar-events-lost

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/39

------------------------------------------------------------------------
On 2021-09-08T13:11:10+00:00 Richard Leger wrote:

Could it be that upgrade from 78 to 91 causes a temporary export/import
(via .ics file) of the local calendar and import failed due to Bug
1727938? Resulting in the calendar being empty after upgrade...

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/40

------------------------------------------------------------------------
On 2021-09-09T14:04:54+00:00 Anjeyelf wrote:

(In reply to Wayne Mery (:wsmwk) from comment #38)
> (In reply to Anje from comment #37)
> > Still getting reports relating to the Home calendar - loss of data upon 
> > update to 91 - not working:
> > https://support.mozilla.org/en-US/questions/1349601
> 
> Has it been confirmed that the reporter is NOT using the provider add-on?

Confirm - Some Users only using the default 'Home' calendar and NOT the 
provider addon - actually not using any addons. They only have the one 
calendar. Some using both Home and other eg: Google. But 'Home' effected the 
same.
Update removed everything from calendar.
Then the blank Calendar unable to retain any entries in Home calendar - 
separate bug but seems related.

Workaround to get Calendar working: 
if user has no backup then create a new Home calendar and then delete the 
original non functioning Home calendar. Unfortunately all previous calendar 
entries/events etc prior to version 91* update are lost. 

If user had a 78* backup created: 
Install Thunderbird 78* (whatever version they previously used) to another 
location, point to use backup profile then export the calendar.
In version 91*, import the calendar. Delete the original blank non functioning 
Home calendar.
Then remove the 78* version.
This workaround using backup is ok for those savvy enough to know how to 
install and run different TB versions. But may be beyond some people.

Those will google accounts seem to get fixed after removing the old
'Provider for google calender' addon and then downloading and installing
latest version so can now recreate the calendar.

So the biggest problem seems to be for those using Home calendar who do
not have a backup.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/41

------------------------------------------------------------------------
On 2021-09-09T14:09:08+00:00 R-john-w wrote:

@Anje: Like I asked in the other bug: Do those people get any errors on
the console? I have a report from a somewhat related case, which looks
like the data is there, but simply fails to display, due to some parsing
errors.

The error that user reported is

```
console.error: Lightning: 
  Parser Error. Could not find 'VCALENDAR' component.
```
It could be that a parsing routine has changed from TB78 to TB91 and now it 
cannot render events it formaly could. But we need error logs to do anything, 
or a broken profile to look at.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/42

------------------------------------------------------------------------
On 2021-09-09T14:29:53+00:00 Worcester12345 wrote:

I am also having problems with calendar. I see all calendars on the left
hand side. My "Home" calendar is the only one that displays data. I am
using the Provider For Google Calendar Add-on version 91.0.1 (just
updated today).

This used to just work prior to this version of Thunderbird. If there is
a means of using Google/GMail calendars WITHOUT using this Add-on, that
is not clear or easy to find. If you can provide some simple steps to
back out of that, and do it a different way, I am all ears, and would be
glad to test the functionality for you. Just keep it all in here (this
bug), so that others may benefit or help test.

Thank you.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/43

------------------------------------------------------------------------
On 2021-09-09T16:03:34+00:00 Anjeyelf wrote:

(In reply to Worcester12345 from comment #43)
> I am also having problems with calendar. I see all calendars on the left hand 
> side. My "Home" calendar is the only one that displays data. I am using the 
> Provider For Google Calendar Add-on version 91.0.1 (just updated today). 
> 

I'm running more than one version of Thunderbird. 
I've just uninstalled one v 78.14.0 and installed v 91.1.0 and all updated ok.  
I was initially presented with a new profile, but easy to point to desired one. 
Both Home and Gmail ok. Using latest 'Provider for Google calendar v 91.0.1'. 
Oddly, I was checking out 'Error Console' window when main UI seemed to close,  
but was running somewhere, so closed everything and opened again.  I had been 
booted out of Google Calendar - bit odd as passwords are stored and needed to 
input password again, but all still ok.
I helped a user get his google calendars up and running again but that user 
needed to removed them first, restart TB and do a complete recreation.
New Calendar - Use Network - select gmail email address - select all gmail 
calendars and Tasks as required and create afresh.


I asked other user to check error console, but they had restarted
Thunderbird after getting Home calendar fixed to check it retained info
- so original error data was auto wiped out.

As my initial update went ok I did check error console.

Results: attached txt file for full text, but noted these lines:

> 15:24:19.227 [l10nregistry] Attempting to synchronously load file
> resource:///chrome/en-US/locale/en-US/calendar/messenger/otr/otrUI.ftl while 
> it's being loaded asynchronously. L10nRegistry.jsm:597:19

> 15:24:19.726 Calendar: Storage: Upgrading to v23, a backup was written
to:
C:\Users\XXXX\AppData\Roaming\Thunderbird\Profiles\profilename\calendar-
data\backup\local.v22.sqlite calStorageUpgrade.jsm:213

> 15:24:21.046 Calendar: Storage: Upgrading to v23, a backup was written
to: C:\Users\XXXX\AppData\Roaming\Thunderbird\Profiles\profile
name\calendar-data\backup\local.v22-1.sqlite calStorageUpgrade.jsm:213

Not sure why it performed this backup twice - but at least I've located
where a backup should be found.

> 15:24:21.402 [l10nregistry] Attempting to synchronously load file
resource:///chrome/en-US/locale/en-US/calendar/toolkit/intl/languageNames.ftl 
while it's being loaded asynchronously. L10nRegistry.jsm:597:19

> 15:24:21.403 [l10nregistry] Attempting to synchronously load file
resource:///chrome/en-US/locale/en-US/calendar/toolkit/intl/regionNames.ftl 
while it's being loaded asynchronously. L10nRegistry.jsm:597:19

> 15:24:21.403 [Exception... "Component returned failure code: 0x80520001 
> (NS_ERROR_FILE_UNRECOGNIZED_PATH) [nsIXPCComponents_Utils.readUTF8URI]"  
> nsresult: "0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH)"  location: "JS frame 
> :: resource://gre/modules/L10nRegistry.jsm :: L10nRegistry.loadSync :: line 
> 692"  data: no] L10nRegistry.jsm:692:19
> 15:24:21.403 [Exception... "Component returned failure code: 0x80520001 
> (NS_ERROR_FILE_UNRECOGNIZED_PATH) [nsIXPCComponents_Utils.readUTF8URI]"  
> nsresult: "0x80520001 (NS_ERROR_FILE_UNRECOGNIZED_PATH)"  location: "JS frame 
> :: resource://gre/modules/L10nRegistry.jsm :: L10nRegistry.loadSync :: line 
> 692"  data: no] L10nRegistry.jsm:692:19

> 15:24:21.877 Calendar: [calGoogleSession] Authentication failure: undefined 
> gdataSession.jsm:315
> 15:24:21.878 Calendar: [calCachedCalendar] replay action failed: <unknown>, 
> uri=googleapi://nameh...@gmail.com/?calendar=namehere%40gmail.com, 
> result=null, operation=[object Object] calCachedCalendar.js:346

AS you can see the authentication failed and this required input of
password and to allow Thunderbird access to google.


After restart which requested google password again - I checked error console. 
Image of that data will be attached as image file.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/44

------------------------------------------------------------------------
On 2021-09-09T16:04:42+00:00 Anjeyelf wrote:

Created attachment 9240326
error console.txt

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/45

------------------------------------------------------------------------
On 2021-09-09T16:05:08+00:00 Anjeyelf wrote:

Created attachment 9240327
errorconsole-91.1.0.jpg

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/46

------------------------------------------------------------------------
On 2021-09-09T16:22:31+00:00 R-john-w wrote:

I am lost. We need to split this bug into "I am using google provider"
and "I am not using google provider".

@Anje: The text log shows you are using google, removing all google
calendars and the google provider and starting from scratch does not fix
it for you?

The image log shows you are using at least one incompatible add-on (the
error in implementations.js at the top), are you able to see which one?
(click on the filename, it should open in an editor, if you cannot make
anything out if it, please post that file here in full length).

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/47

------------------------------------------------------------------------
On 2021-09-09T16:31:20+00:00 R-john-w wrote:

Sorry, post the full filepath (!), not the file.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/48

------------------------------------------------------------------------
On 2021-09-09T19:24:45+00:00 Richard Leger wrote:

Created attachment 9240387
TB.x64.en-gb.78.14&91.1.0.console.logs.home.calendar.txt


FYI, about local Home calendar being empty after upgrade, I could **not** 
reproduce the issue, here are the steps followed...

- Install TB 78.14 en-gb on Windows 10 Pro x64 21H1 10.0.19043.1165
- Setup a new user profile
- Don't enable email - just close the email setup wizard
- Enable Home calendar in Calendar view
- Import .ics file (a known working calendar exported into .ics file via TB) 
into the Home local calendar.
- Exit and restart TB 
- Gather console error logs - see attached part 1
- Exit TB
- Install TB 91.1.0 en-gb x64 ==> TB upgrade
- Open TB
- Home calendar is still enabled, and even items both vevent and vtodo 
available in TB 91.1.0 after upgrade -
-- I can also record new items into the calendar
- Gather console error logs - see attached part 2

Hope that help in some way...

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/49

------------------------------------------------------------------------
On 2021-09-09T19:33:16+00:00 Richard Leger wrote:

(In reply to Anje from comment #41)
> Install Thunderbird 78* (whatever version they previously used) to another 
> location, point to use backup profile then export the calendar.
> In version 91*, import the calendar. 

Be aware that import in 91.x may fail if VTODO (tasks) are present in
the .ics file... as reported in Bug 1727938...

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/50

------------------------------------------------------------------------
On 2021-09-09T20:12:14+00:00 Richard Leger wrote:

FYI,

I re-run test as per Comment 49 but this time in addition of Home local
calendar, I also added, in TB 78.14 en-gb new user profile, one network
Caldav calendar, and one network Google calendar (via the Provider for
Google Calendar version 78.0.2 from 9 September 2021).

After manual upgrade to TB 91.1.0 en-gb all three calendars are fully
visible and available. First time I added an item to the Google Calendar
I was prompted to authenticate again... but all seems working after
following the procedure (same as for first time setup)... I noticed that
the Provider for Google Calendar add-on automatically updated to version
91.0.1 from 9 September 2021.

So again I am **not** in measure to reproduce the issue at my end, at
least not with the calendar data I use or the way I test it... contrary
to some people that seems to encounter it...

Either sorted or something else is causing the issue to some... at least
not easily reproducible...

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/51

------------------------------------------------------------------------
On 2021-09-10T11:17:16+00:00 Anjeyelf wrote:

(In reply to John Bieling (:TbSync) from comment #47)
> I am lost. We need to split this bug into "I am using google provider" and "I 
> am not using google provider". 

I can see there is a valid point to that. But it seems likely the
original problem for those using google was the addon could not update
because it was not ready when version 91 was released. Getting the addon
updated and recreating the calendar seems to work.

So the real issue is what happened to the 'Home' calendar when it
appears to be blank.

> 
> @Anje: The text log shows you are using google, removing all google calendars 
> and the google provider and starting from scratch does not fix it for you?

Prior to intalling 91* - I made sure the 'Provider for Google Calendar' addon 
update option 'On' was selected because if default is selected then updates do 
not occur.  All updates used to occur by default, but this seemed to all change 
in version 78 and those auto updates stopped. So user just needs to set it to 
On before updating. So google provider addon updated and all was ok - I just 
got a couple of prompts to logon by google and allow Thunderbird access.  There 
was no need to do anything to my google calendar.
For those who did not get the auto update for the provider addon it caused a 
problem. Updating the addon and recreating the google calendar would sort out 
that problem.

I would suggest major new releases are not released if dependent on
specific addons like Provider for Google Calendar are not compatible at
that same point in time or come to some arrangement where it is
incorporated like Lightning Calendar.


> 
> The image log shows you are using at least one incompatible add-on (the error 
> in implementations.js at the top), are you able to see which one? (click on 
> the filename, it should open in an editor, if you cannot make anything out if 
> it, please post that file here in full length).


The incompatible addon is mail merge which is not in my list of addons, so it 
is probably got some residual files.
I presented some error console data because it is just as useful to see what 
was reported even if all went ok. 

I am reporting problems experienced by people in Support Forums.
I decided to install 91.1.0 and run to see if I could reproduce the error with 
the Home Calendar or Google or both.  Then perhaps I would have error console 
data etc.
However, the google addon updated just fine and I just got presented with a new 
profile, so had to point it to the correct one - no worries.  Then seemed to 
lose the session with Google and was prompted to send password again - all is 
saved, so no idea what happened. 
REstarting next day all is still ok.

But the point is - in my case - no calendar data was lost.  I could not 
reproduce the same error as reported in this bug. 
So all info I'm relaying is being gleaned from the Support Forum.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/52

------------------------------------------------------------------------
On 2021-09-10T13:24:10+00:00 R-john-w wrote:

@Anje: Thank you for your work in support.

> But it seems likely the original problem for those using google was
the addon could not update because it was not ready when version 91 was
released. Getting the addon updated and recreating the calendar seems to
work.

The real issue was, that the google provider installed in TB78 claimed
compatibility with TB91 as well, which in fact was wrong and then it
failed to load/view the events in TB91 after the upgrade. You did not
miss the update for the provider, there simply was none. It should have
disabled itself (with a big yellow "I am incompatible" warning in the
add-on manager) and the google calendars should have been disabled as
well with no option to enable them. I do not know, if the broken google
provider had negative effects on the general calendar system and
therefore could have caused the empty home calendars as well.

Once the real working version of the provider for TB91 was released, the
google related issue was resolved. We made changes to the add-on system,
that add-ons like the google provider can no longer claim compatibility
with the next ESR per default, so something like this should not happen
again next year.

FYI: We still have a few add-ons which falsely claim compatibility with
TB91 and could cause issues popping up in support (see
https://thundernest.github.io/add-on-reports/tb91-experiments-without-
upper-limit.html)

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/53

------------------------------------------------------------------------
On 2021-09-10T14:22:48+00:00 Worcester12345 wrote:

(In reply to John Bieling (:TbSync) from comment #53)
...
> Once the real working version of the provider for TB91 was released, the 
> google related issue was resolved. 

I have updated the google provider add-on, and am still unable to access
calendars, so the issue is NOT completely resolved.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/54

------------------------------------------------------------------------
On 2021-09-10T14:39:02+00:00 Richard Leger wrote:

(In reply to Worcester12345 from comment #54)
> (In reply to John Bieling (:TbSync) from comment #53)
> ...
> > Once the real working version of the provider for TB91 was released, the 
> > google related issue was resolved. 
> 
> I have updated the google provider add-on, and am still unable to access 
> calendars, so the issue is NOT completely resolved.

It seems indicated in some comments above that you have to remove the
Google calendar(s), and re-add it(them) afterwards the add-on has been
updated... have you tried that? I would suggest to restart TB after the
add-on has been installed/updated.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/55

------------------------------------------------------------------------
On 2021-09-13T20:40:56+00:00 Worcester12345 wrote:

"And just like that, they are working again."

No version changes, no extension ("Addon"?) changes. It DID come up with
a box that had Google ask for a user name and password.

I wonder if it is fully working. Even before it broke, it would not
allow me to click on an invite in email and put it in the calendar. It
used to do this maybe a year or two ago.

Anyone else have the calendar suddenly, inexplicably, start working
again?

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/56

------------------------------------------------------------------------
On 2021-09-14T06:07:36+00:00 Dimas SC wrote:

(In reply to Worcester12345 from comment #56)
> Anyone else have the calendar suddenly, inexplicably, start working again?

Not for me

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/57

------------------------------------------------------------------------
On 2021-09-14T14:23:56+00:00 Wls220spring wrote:

(In reply to Worcester12345 from comment #56)

> Anyone else have the calendar suddenly, inexplicably, start working
again?

Not for me after Fedora updated their 78.11.0 to 91.1.0 on Fedora 34.

I would start the application and my Google CalDAV calendar would be
empty, with the "Enable" button next to it in the Calendar List.

I would click it and the items would appear, but be gone on the next restart.
Decided to unsubscribe from it, added it back again and that problem is solved.

I don't use the Provider for Google Calendar extension.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/58

------------------------------------------------------------------------
On 2021-09-14T14:33:21+00:00 Worcester12345 wrote:

Well, only partial success, it seems. It now displays the calendars, but
I cannot dismiss the "reminders" or the popup window they show up in. It
also froze up for a long time and crashed. I ended up turning off all
extensions; but now can no longer see calendars/events again.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/59

------------------------------------------------------------------------
On 2021-09-14T14:37:20+00:00 Thee-chicago-wolf wrote:

(In reply to Worcester12345 from comment #59)
> Well, only partial success, it seems. It now displays the calendars, but I 
> cannot dismiss the "reminders" or the popup window they show up in. It also 
> froze up for a long time and crashed. I ended up turning off all extensions; 
> but now can no longer see calendars/events again.

If these un-dismissable popups are in a Google/GMail calendar, try this:

1. Log into the GMail WebUI account from the calendar that's having the issue 
(hopefully not a recurring event, but if yes, maybe just re-create it)
2. Find the calendar event and delete it through the Web GUI
3. TB should then pop up the Discard Changes and Reload message and the 
un-dismissable popup should stop

That's worked 100% for me.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1945368/comments/60


** Changed in: thunderbird
       Status: Unknown => Confirmed

** Bug watch added: github.com/kewisch/gdata-provider/issues #194
   https://github.com/kewisch/gdata-provider/issues/194

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Title:
  Thunderbird 91 forgets default calendar

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