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Microsoft has released cumulative update KB5019765 for Windows 11 Insider Build 25217 available on the Dev channel. This update does not bring any innovations and is aimed at testing the maintenance system. In particular, the company is testing the possibility of releasing and installing updates on top of previous updates.
After the update, the system build number will change to 10.0.25217.1010.rs_prerelease_flt.221001-1732.
Note that the maintenance system is one of the key components of the operating system, which should work as stably as possible, since it is it that is used to distribute functional and cumulative updates.