Also affected are PCs running Windows 10 version 22H2, Windows 10 version 21H2, Windows 10 version 1809, and Windows 10 version 1607. Support for Windows 10 ended October 14, so the issue should only affect these systems if admins have paid for extended support and received the December update.
This issue is caused by a December Patch Tuesday security update (KB5071546) that introduced changes to the MSMQ security model and NTFS permissions on the C:\Windows\System32\MSMQ\ storage folder. MSMQ users now require write access to this folder, which is normally restricted to administrators, says Microsoft. As a result, attempts to send messages via MSMQ APIs might fail with resource errors.
“A workaround is available for affected devices,” says the Microsoft update. “To apply the workaround and mitigate this issue in your organization, please contact Microsoft Support for business. We are investigating this issue and will provide more information when it is available.”
