Kerberos Troubleshooting in 2026: RC4 Deprecation, CVE-2026-20833 & the IT Helpdesk Error Code Fix Guide
The April 14, 2026 RC4 deprecation enforcement (CVE-2026-20833) is breaking Kerberos auth across Active Directory. Decode 12 error codes, run klist and setspn, migrate service accounts to AES, and reset krbtgt the right way.