[cvsnt] SSPI Authentication failure after password expiry

[matthew b]

Hi. We use CVSNT and TortoiseCVS quite successfully. Occasionally we start 
seeing the following strange error running any CVS command, either from 
Tortoise or the command line:

unrecognized auth response from cvsserver: cvs [server aborted]: 
Authentication failed

This appears suddenly on an otherwise working configuration. What is strange 
is that the same user can use an identical configuration on any other 
machine, or any other user can use that sandbox on the problematic machine. 
So this only happens for a particular user on a particular machine. Of 
course, it's the user's dev machine.

So far we've found two workarounds: 1. Switch to pserver instead of sspi. 2. 
rebuild the entire client machine.

This just happend today, and it may have brought up an underlying symptom: 
the user's password expired. The password has since been updated, and the 
client rebooted, but the problem persists.

Any suggestions on solving or debugging this issue?

Thanks,
Matthew

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