A windows 11 update, kb5074109, has been released with major fixes, but it is also causing issues for some users, including black screens, freezes, and problems with outlook and other applications. The update is part of the january 2026 update, which is intended to fix various bugs, but it appears to be causing new problems for some users. The nature and extent of the issues and fixes are not entirely clear, with some reports indicating that uninstalling the update may be necessary to resolve certain problems.