Windows 10 Out-of-Band Updates, KB5074976, KB5074975 & KB5074974 Fix MSMQ Issues

Microsoft has pushed a few new out-of-band updates for different versions of Windows 10 that fixes long list of confirmed MSMQ issues given below:

• MSMQ queues becoming inactive
• IIS sites failing with “Insufficient resources to perform operation” errors
• Applications unable to write to queues
• Errors such as “The message file ‘C:\Windows\System32\msmq\storage*.mq’ cannot be created” when creating message files
• Misleading logs like “There is insufficient disk space or memory”, despite sufficient disk space and memory being available

Here’s the changelong for the update:

[Message queuing (MSMQ) (known issue)] Fixed: After installing the Windows updates released on December 9, 2025, users experienced issues with the Message Queuing (MSMQ) functionality. This issue also impacts a clustered MSMQ environment under load. This issue might lead to message queues becoming inactive, messages about insufficient resources, applications unable to write to message queues, error messages about the message cannot be created, or messages about insufficient disk space or memory. Individuals using Windows Home or Pro editions on personal devices are very unlikely to experience this issue. This issue primarily affects enterprise or managed IT environments.

The company reportedly also advised IT administrators to contact Microsoft Support for Business to receive guidance on temporary mitigation steps. You can read more about it here.