On Tue, Oct 16, 2018 at 09:40:42AM +0200, Pierre Dehaen wrote:
> Hello list,
> 
> Configuration:
> - Windows are clients of an AD
> - Kfw 4.1 is used to acquire tickets from another realm
> - Clients use tickets through Firefox to access apache applications
> - All working well
> 
> In the Kfw GUI, next to the TGT of the additional realm, we see the TGT of 
> the AD. The 
> former shows API: as credential cache, while the later shows MSLSA:, all good.
> 
> According to 
> <https://mailman.mit.edu/pipermail/kerberos/2015-April/020637.html>: Once 
> you have a ticket, the "make default" button will set the registry entry for 
> you. 
> 
> That is the problem: once a user has clicked "Make default" while the AD 
> ticket was by 
> chance selected, only one TGT can be acquired at a time, each Get Ticket 
> overwrites all 
> existing tickets.
> 
> Okay, I can fix this in the registry... but users can't, that's too 
> difficult/risky, and I don't find a 
> way to revert to the default credential cache from the GUI. Even the "Make 
> default" trick does 
> not work anymore as all tickets are MSLSA tickets.
> 
> Any advice?

Sadly, this is a "patches welcome" moment -- the issue has been known for
several years but has not been a development priority.  The best workaround
would be to clear the registry entry (and presumably you could prepare a
script/standalone tool to clear this specific registry key, that would be
safe for exposure to end users).

-Ben
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