Monthly updates for Windows and other microsoft software include critical patches. https://www.bleepingcomputer.com/news/microsoft/windows-11-kb5121003-and-kb5120240-cumulative-updates-released/
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Some vendors are complaining it’s affecting the way they do printing but microsoft isn’t listing any known issues.
Ran the update on Win10 Pro, Win 11 25H2 and 2019 successfully, no issues so far. Had an issue with 2025 Remote Desktop Server last couple updates that was a service stopped to fix a black screen issue. Unrelated to the updates.

