Microsoft has identified an issue affecting Message Queuing (MSMQ) functionality in some enterprise environments after installing the December 2025 Windows security update (released December 9, 2025). Individuals using Windows Home or Pro editions on personal devices are very unlikely to experience this issue, as it primarily affects enterprise or managed IT environments. To address this issue, an out-of-band (OOB) update has been released, today, December 18, 2025, on the Microsoft Update Catal...
Applies to: Windows
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