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Message Queuing (MSMQ) might fail with the December 2025 Windows security update

Microsoft lists this known issue for 6 Windows versions; its status is Resolved. It started with KB5071503, KB5071505, KB5071543 and 2 more updates. Microsoft resolved it in KB5074974, KB5074975, KB5074976 and 2 more updates.

Resolved1 version

Facts

Microsoft id
3751
Status
Resolved
Products
Windows 10 Enterprise LTSC 2021, Windows 10, version 1607, Windows 10, version 1809, Windows 10, version 22H2, Windows 10, version 22H2, Windows 10, version 21H2, Windows 10, version 1809, Windows 10, version 1607, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012
Versions
Windows 10 Enterprise LTSC 2021, Windows 10, version 1607 and Windows Server 2016, Windows 10, version 1809 and Windows Server 2019, Windows 10, version 22H2, Windows Server 2012, Windows Server 2012 R2
Originating KBs
KB5071503, KB5071505, KB5071543, KB5071544, KB5071546
Resolved by
KB5074974, KB5074975, KB5074976, KB5074978, KB5074980
First captured by us
(from our first import of this list)
Microsoft last modified
Source
Windows known issues · open the original at Microsoft

Status per Windows version

VersionStatusOriginating updateOpenedResolved
Windows 10, version 22H2Resolved KB5074976OS Build 19045.6691, KB5071546, 2025-12-092025-12-13 01:13 UTC2025-12-18 22:00 UTC
Windows 10 Enterprise LTSC 2021Resolved KB5074976OS Build 19044.6691, KB5071546, 2025-12-092025-12-13 01:13 UTC2025-12-18 22:00 UTC
Windows 10, version 1809 and Windows Server 2019Resolved KB5074975OS Build 17763.8146, KB5071544, 2025-12-092025-12-13 01:13 UTC2025-12-18 22:00 UTC
Windows 10, version 1607 and Windows Server 2016Resolved KB5074974OS Build 14393.8688, KB5071543, 2025-12-092025-12-13 01:13 UTC2025-12-18 22:00 UTC
Windows Server 2012 R2Resolved KB5074978KB5071503, 2025-12-092025-12-13 01:13 UTC2025-12-18 22:00 UTC
Windows Server 2012Resolved KB5074980KB5071505, 2025-12-092025-12-13 01:13 UTC2025-12-18 22:00 UTC

Microsoft says

After installing the December 2025 Windows security update (KB5071546), users might face issues with the Message Queuing (MSMQ) functionality.

Windows known issues,

Read Microsoft's full post

What Microsoft changed

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    As first seen: Resolved
    Status
    Resolved

    Seen by us · Microsoft's timestamp · Microsoft's page

Mentioning the same Microsoft ids

Last updated