Windows 11 Storage Bug Can Quietly Devour Hundreds of GB on Your C: Drive

Updated:07:54 PM CEST Aug,22

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Gameguru Mania News - Jul,07 2026 -

Windows 11 Storage Bug Can Quietly Devour Hundreds of GB on Your C: Drive - tech
(hx) 11:45 AM CEST - Jul,07 2026 - Post a comment / read (1)

Microsoft has confirmed a nasty Windows 11 bug that causes a hidden system file to grow uncontrollably and eat up massive amounts of storage space.

The problematic file, CapabilityAccessManager.db-wal, sits in C:\ProgramData\Microsoft\Windows\CapabilityAccessManager\ and is tied to privacy and access logging for features like camera, microphone, location, and screen capture.

On affected PCs, the file can balloon from a few megabytes to 70GB, 200GB, or even over 500GB, appearing under “System files” in Storage settings.

Microsoft quietly fixed the issue in the optional update **KB5095093**, which improves disk space usage for this file.

The fix is expected to roll out automatically to all users with the July 2026 Patch Tuesday update.

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