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Microsoft patches Windows 11 bug causing massive storage bloat

Users reporting hundreds of gigabytes of disk space consumed by a single hidden system file can finally clear their drives. Microsoft has released a targeted fix in its latest optional update to address a persistent bug in the CapabilityAccessManager.db-wal file that has plagued Windows 11 installations for months.

Microsoft patches Windows 11 bug causing massive storage bloat

The problematic file, responsible for managing app permissions, has been ballooning to absurd proportions on various machines. While some users noticed modest growth of 12GB, others discovered the file occupying up to 500GB of storage. Technical observers suggest the issue stems from the operating system logging repetitive event data for privacy controls and location access requests, causing the database to expand uncontrollably.

The solution arrives via the June 2026 update, identified as KB5095093. This patch specifically optimizes how the system handles disk space for this database component. To apply the fix, navigate to the Settings menu, proceed through Windows Update to Advanced options, and select the optional update to initiate the installation.

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