Windows, Microsoft announces a bug affecting all versions

Microsoft confirms a bug affecting all supported versions of Windows. This concerns Windows 10, Windows 11 22H2 or Windows 7 SP1 (ESU program) and Windows 8.1.

This failure is related to the latest cumulative updates released on Patch Tuesday of October 2022. In detail Microsoft explains that domain join operations can fail on all supported versions of Windows.

The good news is that this bug is unlikely to be encountered by the general public. Redmond adds

Domain join operations may fail with error “0xaac (2732): NERR_AccountReuseBlockedByPolicy” and message “An account with the same name exists in Active Directory. Account reuse has been blocked by security policy.

This issue stems from the October 2022 security updates (KB5018427) which introduced some hardening changes that are enabled by default for domain join.

Affected scenarios include certain domain join or “reimaging” operations where a computer account was created or prepared by an identity different from the identity used to join or rejoin the computer to the domain.

Development teams are working on additional optimizations. However, we don’t have any information about them or a release schedule. The giant only specifies

Please see KB5020276 to understand the designed behavior. We have added information to this knowledge base and are evaluating if optimizations can be made in a future Windows update. These guidelines will be updated once these changes are posted.

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