Trying to use SSO (WIndows environment)

[ilyaHlevnoy]

maybe there is a problem with the encryption method? look at this topic

Unable to connect using Single Sign-On

Yes it is, but it is still a default microsoft option when you creating keytab. Everybody who can have this problem after Windows Update (Especially Novemeber 2022 and later) recreate a new keytab file with this command: ktpass /princ xmpp/openfireserver.domain.local@DOMAIN.LOCAL -mapUser xmpp-openfire@DOMAIN.LOCAL /pass * /crypto AES256-SHA1 /ptype KRB5_NT_PRINCIPAL /out c:\file.keytaab