I was able to connect to my windows systems from linux box using domain credentials, when all of a sudden it stopped working. I have tried different accounts and different domains and getting the same error for every account --

""msg": "kerberos: authGSSClientInit() failed: (('Unspecified GSS failure. Minor code may provide more information', 851968), (\"Can't find client principal user@domain in cache collection\", -1765328243))","

The machine is running ubuntu, running Kerberos 5 version 1.12, and I have rebooted it as well. Klist shows that a valid ticket is available. No changes have been made anywhere. Searched on internet and haven't found anything. How do I find out where the problem is?

These packages are installed:

pip (1.5.4) pycrypto (2.6.1) pykerberos (1.1.13) python-apt ( python-debian (0.1.21-nmu2ubuntu2) python-ntlm3 (1.0.2) pywinrm (0.2.0)

  • After a lot of digging around, I found that there was another cache file in the /tmp folder. I must have done something because of which that file got created. Deleted that file and the problem resolved. Turns out, today again I have the same problem and this time I do not have another cache file. – Aseem Aug 29 '16 at 14:14

I had the same issue when I was using the pywinrm library on a linux machine. The solution was to have the domain as upper casing. Example: user@DOMAIN.COM.

I found the solution to my problem here: http://www.slideshare.net/AshwinPawar/krb5

Hope this helps.


My problem with the same message was related to a wrong reverse pointer in DNS. I got the idea from Pat Suwalski. I guess a missing DNS pointer could have a similar effect. I just wanted to post this here since the error message is similar.

kerberos: authGSSClientStep() failed: ((''Unspecified GSS failure. Minor code may provide more information'', 851968), (''Server not found in Kerberos database'', -1765328377))

The Ansible documentation related to Windows changed for the better in recent years:

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