Microsoft Asks IT Admins to Contact for Fix Related to Windows IIS Failure Issues

Microsoft has confirmed that its December 2025 Windows security update (KB5071546, OS Build 19045.6691) is causing Message Queuing (MSMQ) failures, leading to widespread IIS site crashes. First reported on December 12 and last updated December 16, the problem manifests under load, particularly in clustered setups, disrupting critical messaging workflows. Affected users report MSMQ queues going […]

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