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Windows 10 ESU MSMQ out-of-band update (KB5074976)

Security Patch Release
First reported
Last updated
Happening score
H score 21
1 unique sources, 1 articles

Summary

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Microsoft is rolling out KB5074976 as an out-of-band update for Windows 10 ESU to fix Message Queuing (MSMQ) problems introduced by the December 9, 2025 updates. The release matters because the MSMQ breakage can disrupt enterprise message queues, especially in managed or clustered environments.

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Timeline

  1. 19.12.2025 03:15 1 articles · 5mo ago

    Windows 10 December 9 updates disrupt MSMQ

    Victim Impact Update

    Windows 10 updates released on December 9, 2025 caused Message Queuing (MSMQ) functionality problems in some enterprise or managed IT environments, including inactive message queues, applications unable to write to queues, error messages about messages that cannot be created, and clustered MSMQ environments affected under load.

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  2. 19.12.2025 03:15 2 articles · 5mo ago

    Microsoft rolls out KB5074976 for Windows 10 ESU

    Mitigation Patch Update

    Microsoft rolled out out-of-band update KB5074976 via Update Catalog for Windows 10 ESU systems affected by Message Queuing (MSMQ) failures, directing impacted PCs to install the fix to restore MSMQ functionality.

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