Overview
- Microsoft quietly added a fix for the storage issue to optional update KB5095093 in June 2026 and will push the repair to all machines on July 14, 2026.
- The problem centers on CapabilityAccessManager.db-wal, a write-ahead log used for app-permission events such as camera, microphone, and location, which can grow from a few megabytes to hundreds of gigabytes in some installs.
- Windows Settings often shows the space as generic “System & reserved,” so reporters recommend using disk analyzers like TreeSize, WizTree or WinDirStat or running an elevated robocopy command to find CapabilityAccessManager.db-wal.
- Users are advised to install the optional KB5095093 update or wait for the July rollout because manually deleting the .db-wal file or its folder can cause system problems, with some users reporting temporary loss of Wi‑Fi after removal.
- The bug has surfaced in user forums over roughly the past year and can fill system drives and harm performance, so affected users should check their free space and apply the patch to avoid lost storage and potential backup issues.