Microsoft tests the 15-character limit of Windows Server admins' patience
ID: 25056919-cb78-57b5-b81f-96bd6e4c389a
STIX ID: report--25056919-cb78-57b5-b81f-96bd6e4c389a
Feed Name: The Register (Security)
Threat Score
Microsoft's May 12 security update causes domain controller discovery to fail on Windows Server 2016 hosts whose machine name is exactly 15 characters, returning ERROR_INVALID_PARAMETER and potentially breaking management functions such as DFS Namespace administration; Microsoft has no workaround other than changing the hostname, and also reported separate update-install failures on some Windows 11 systems with insufficient EFI System Partition size.
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