UPN of user entry and PAC do not match `NSS return code [-1], request return code [1432158309][PAC check failed]`

Solution Verified - Updated -

Issue

  • UPN of user entry and PAC do not match.
  • NSS return code [-1], request return code [1432158309][PAC check failed].
  • Unable to login with AD user.
  • UPN check cannot be disabled explicitly but requires krb5_validate = false as a work-around.

Environment

  • Red Hat Enterprise Linux (RHEL)
  • sssd-2.7.3-4.el8_7.1.x86_64
  • sssd-2.7.3-4.el9_1.1.x86_64
  • Identity Management (IdM/IPA)
  • IPA Client
  • Active Directory (AD)

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