"...Windows Latest
Microsoft confirms Windows 11 has a nasty storage bug that can silently eat hundreds of GB from your C: drive.

If Settings > Storage > System & reserved shows System files using 100GB, 200GB, or even 500GB, random downloads may not be the problem.

A protected file called CapabilityAccessManager.db-wal can grow out of control, and it's found inside:

C:\ProgramData\Microsoft\Windows\CapabilityAccessManager\

This file is tied to Windows privacy/access logging for things like camera, microphone, location, and screen capture. Normally, it should be a few MB. On affected PCs, users have reported 70GB, 110GB, 200GB, and even 513GB.

Microsoft quietly fixed it in KB5095093, saying the update “improves disk space usage” for this file. The fix should also arrive automatically with July 2026 Patch Tuesday..."