I log in to Ubuntu 18.04 successfully with kerberos/sssd authentification in an ActiveDirectory domain. Since a few days I have an issue using my kerberos ticket/credentials cache to auth with some server shares.
If i call klist my credentials cache is displayed with start and expire date 01.01.1970. I believe that this causes my issue. After removing /tmp/krb5cc-file and authenticating with kinit again the start and expire date is correct and auth against server shares work like expected.
Do you know about known issues causing this behaviour? Or any hints how to solve this without double authenticate?
Some of my colleagues are working with 18.04 too but without any issues.
Best regards Patrick