Microsoft announced that the September 2026 Patch Tuesday updates resolved an issue affecting desktop settings on certain Windows devices, which caused desktop wallpapers to revert to a solid black background after the installation of the KB5120998 August 2026 preview update. This bug impacted Windows 11 24H2 and 25H2 systems, preventing the correct loading of desktop settings and also affecting mouse settings. Microsoft recommended users update their devices to the latest security update released on September 8, 2026 (KB5124008) to benefit from the fix.