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Microsoft MSMQ enterprise workaround advisory (December 2025)

Advisory/Mitigation
First reported
Last updated
Happening score
H score 25
1 unique sources, 3 articles

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

  1. 16.12.2025 02:00 3 articles · 6mo ago

    Microsoft directs enterprise customers to a temporary MSMQ workaround

    Mitigation Patch Update

    Microsoft 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.

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