Windows update incident archive
Windows Update Problems in 2026
This archive documents 20 Windows update incidents reported in 2026, from disruptive bugs to system-breaking failures. Each entry links to its KB number, affected Windows components, fix status, and sources.
4 catastrophic ยท 5 still marked unfixed
Frequently affected in 2026
Documented incidents
Defender update protects PCs from the grave threat of completing a scan
Patch Tuesday crashes Arm productivity and RGB gaming sessions
OneDrive update installs another Photos app because one apparently wasn't enough
Windows decides your networking software isn't properly credentialed, cuts its connections
The server that hands out updates spent a week too clogged to hand out updates
Preview update turns Dell laptops into shutdown-prone space heaters, blocks July security patches
HP PCs boot-looped into recovery, OneDrive dead in File Explorer, Recycle Bin renaming files
Install failures on cramped EFI partitions and mysteriously slow internet
BSODs, BitLocker lockouts, BITS broken, and domain controllers down
Microsoft sign-ins break everywhere, Windows blames your internet connection
February's fix for January traps PCs in 15-restart boot loops
Reset this PC resets nothing on hotpatched enterprise devices
The fix for the fix breaks cameras, Explorer, and booting
Emergency patch #2 fixes Outlook, breaks lock screen
Emergency patch #3: the emergency fixes now need emergency fixes
Emergency patch #1 only fixes two of nine issues
Emergency shutdown fix doesn't actually fix shutdown
Windows forgets how to turn off, laptops cook in bags
PCs bricked, Outlook frozen, Microsoft's advice: uninstall the update