Hi,

I would start with the suggestion below.  Then, I would update all the drivers 
and try to see what other software is normally auto loaded at startup to see 
what could be interfering with QGIS (like a anti malware).  Concerning 
Quickheal, it may have blocked something at the installation so I would 
uninstall it (or disable it completely) and uninstall  QGIS. Reboot, then 
reinstall QGIS.

Nicolas Cadieux
https://gitlab.com/njacadieux

> Le 21 déc. 2020 à 00:35, Ujaval Gandhi <[email protected]> a écrit :
> 
> 
> One of the original suggestions was to disable / uninstall your anti-virus 
> and try launching qgis. Did you try that? From your description it looks like 
> Quickheal might be interfering with qgis. Qgis has other dependencies on 
> python, qt etc so merely allowing qgis may not be enough.  
> 
> Ujaval Gandhi 
> Spatial Thoughts
> 
>> On Mon, Dec 21, 2020, 9:41 AM K R Mayani <[email protected]> wrote:
>> As one suggestion came from other source, I have tried opening QGIS with 
>> firewall off. So I tried to add .exes of python, qgis ltr, qgis in allowed 
>> program in QuickHeal, as its installed and managed firewall, but did not 
>> start.
>> So that strike me another idea. And I started the program in safe boot mode 
>> with network  in windows 10. Surprisingly the program ran normally without 
>> crashing. 
>> So can anyone give me any idea, what went wrong in normal boot mode? Because 
>> in safe boot, OS does not allow to connect through wifi and I, had to, 
>> mostly work with wifi. 
>> 
>>> On Tue, Dec 8, 2020, 7:32 PM Nicolas Cadieux <[email protected]> 
>>> wrote:
>>> Hi,
>>> 
>>> Just a bunch of ideas...
>>> Did you have a working version before or is this a first time QGIS 
>>> installation?  You have 2 choices of installers on Windows, I would try 
>>> with the second installer after removing the first version.  Reboot the 
>>> computer after the installation.  Try Disabling your antivirus or adware 
>>> software you could have when installing or starting QGIS, make sure your 
>>> Windows and drivers are up to date.  Do you have a second version of Python 
>>> on your computer, or a software like ESRI that as it’s own version of 
>>> Python? Perhaps there is a conflict between your QGIS python and the 
>>> default python distribution?  If this is not a new install, would you have 
>>> a problématique python plugin  in the plugin directory? Perhaps try 
>>> removing those...  Would you have weird character in your user directory 
>>> like spaces or accents like “é”? 
>>> 
>>> Nicolas Cadieux
>>> https://gitlab.com/njacadieux
>>> 
>>>>> Le 8 déc. 2020 à 07:07, K R Mayani <[email protected]> a écrit :
>>>>> 
>>>> 
>>>> Hi,
>>>> I am using QGIS 3.14.1 on my Laptop. I am having trouble with the software 
>>>> about its starting. After setting up python screen, it does not starts. I 
>>>> have also tried "run as administrator" but still the problem persists. 
>>>> With v3.10 and v3.14.1, the same problem is there. I have installed 
>>>> software again with "Run as Administrator" but the issue is not solved.
>>>> .NET 4.8 already installed.
>>>> osbuild: 19042.630
>>>> OS: Windows 10, home
>>>> Processor:AMDRyzen 5 3550H with Radeon Vega Mobile Gfx 2.10 GHz
>>>> RAM: 8.00 GB
>>>> crash: https://pastebin.com/5Tk75LTu
>>>> Which version should support my system rig?
>>>> Please help me with my trouble. Or suggest to me the steps.
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