Microsoft MSMQ enterprise workaround advisory (December 2025)
Advisory/Mitigation
Summary
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Microsoft issued temporary mitigation guidance for a Message Queuing (MSMQ) issue that is breaking enterprise apps and IIS sites on updated Windows systems. The problem affects Windows 10 22H2, Windows Server 2019, and Windows Server 2016 devices that installed KB5071546, KB5071544, or KB5071543 during December 2025 Patch Tuesday. Affected organizations are being told to contact Microsoft Support for business for a workaround while Microsoft continues to investigate and has no fix timeline yet.
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Timeline
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16.12.2025 02:00 3 articles · 5mo ago
Microsoft directs enterprise customers to a temporary MSMQ workaround
Mitigation Patch UpdateMicrosoft advised enterprise and managed IT customers using Windows 10 22H2, Windows Server 2019, or Windows Server 2016 with KB5071546, KB5071544, or KB5071543 to contact Microsoft Support for business to obtain a temporary workaround for an MSMQ security-model bug that can break enterprise apps and IIS sites. Microsoft said affected environments may see inactive MSMQ queues, applications unable to write to queues, IIS sites failing with "insufficient resources" errors, and misleading "There is insufficient disk space or memory" messages while it investigates the issue and has not provided a fix timeline.
Show sources
- Microsoft asks IT admins to reach out for Windows IIS failures fix — www.bleepingcomputer.com — 17.12.2025 14:30
- Windows 10 OOB update released to fix Message Queuing (MSMQ) issues — www.bleepingcomputer.com — 19.12.2025 03:15
- Microsoft: December security updates cause Message Queuing failures — www.bleepingcomputer.com — 15.12.2025 11:04