IPA web ui: ERROR: No valid Negotiate header in server response

Once when I tried to log in to my web interface of FreeIPA server, a message appeared: ERROR: No valid Negotiate header in server response.

1. the log file gave:

GSS ERROR gss_acquire_cred[_from]() failed to get server creds: [Unspecified GSS failure.  Minor code may provide more information ( SPNEGO cannot find mechanisms to negotiate)], referer: ...

2. after a long search, I found the file:


it seems that the problem was with:


3. if other infrastructure is working – the problem can be resolved by this:

ipa-getkeytab -p HTTP/ipa.local.test@LOCAL.TEST -k /var/lib/ipa/gssproxy/http.keytab


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