APRIL KB5083769 UPDATE BREAKS WINDOWS 11 BACKUPS

The KB5083769 update, deployed as part of Microsoft's monthly security cycle, introduces incompatibilities that render backup applications non-functional on affected Windows 11 versions. Users report failed backup processes, error messages, and inability to access backup features from several major vendors. The issue affects systems running both Windows 11 24H2 and the newer 25H2 build. Microsoft has not yet issued guidance on the root cause or timeline for resolution. Users experiencing backup failures should consider delaying the KB5083769 update until a fix is available. Backup software vendors are investigating compatibility solutions. Microsoft typically addresses such issues through follow-up patches or updated drivers within weeks of identification. This marks another instance of security updates creating unintended compatibility problems, highlighting the importance of backup procedures before applying major patches.