"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,"
"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."
The December Patch Tuesday security update KB5071546 changed the MSMQ security model and NTFS permissions for the C:\Windows\System32\MSMQ storage folder. MSMQ users now require write access to that folder, which is normally restricted to administrators. As a result, attempts to send messages via MSMQ APIs may fail with resource errors. Affected systems include Windows 10 versions 22H2, 21H2, 1809, and 1607 if administrators have paid for extended support and installed the December update. A workaround is available but requires contacting Microsoft Support for business. Microsoft is investigating and will provide more information.
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