Microsoft issued an out-of-band security update, KB5085516, toward the end of March to address login failures in various Microsoft applications. However, reports indicate that this patch has introduced new complications for some users. Specifically, on certain Windows 11 systems, individuals are encountering difficulties in relocating or adjusting the size of open windows.
Details of the problem surfaced through BornCity, based on a machine-translated account from a reader. The glitches appear on systems with Windows 11 25H2 Pro edition. Following the application of KB5085516, affected users report an inability to drag or scale windows as usual. Removing the update restores full functionality to these operations immediately.
The official support documentation for KB5085516 from Microsoft does not yet acknowledge this particular problem, maintaining the statement that the company has no knowledge of related concerns. It is unclear if the window-handling disruption is limited to a few devices or represents a broader concern across installations. For those facing such difficulties on Windows 11 25H2 Pro after applying KB5085516, rolling back the update could provide a resolution.
Note: Windows 11 Home users may lack access to features available in the Pro version. For a detailed overview, check our analysis comparing Windows 11 Home and Pro editions. Interested in switching? The upgrade is available at a discount through the PCWorld Software Store for $59, down from $99.
The content is adapted from an original piece published by our affiliate site PC-WELT, with translation and adjustments from the German source.
Hans-Christian Dirscherl's career in technology started with tools like Autoexec.bat, config.sys, Turbo-Pascal, C programming, Sinix, and WordPerfect. Over the past 25 years, he has contributed extensively to IT coverage, including articles on current events, product evaluations, and purchasing recommendations.