Microsoft fixes Windows Kerberos auth issues in emergency updates



Microsoft has released optional out-of-band (OOB) updates to fix a known issue triggering Kerberos sign-in failures and other authentication problems on enterprise Windows domain controllers after installing cumulative updates released during November’s Patch Tuesday.

The company acknowledged and started investigating on Monday when it also said that the known issue could affect any Kerberos authentication scenario within affected enterprise environments.

While Microsoft has also started enforcing security hardening for Kerberos and Netlogon beginning with the November 2022 Patch Tuesday, it said that these auth problems are not an expected result.

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