storage bug Archives

Winsage

July 15, 2026

Windows 11’s 500GB storage bug is fixed. How to check if you’re good

Microsoft's July Patch Tuesday update addressed a significant storage issue for Windows 11 users related to the CapabilityAccessManager.db-wal file, which had been consuming excessive storage space, with reports of usage reaching up to 500 GB. The bug originated from the Capability Access Manager service, which normally allows the file to occupy only a few megabytes. Update KB5101650 was released to fix this issue, improving disk space usage for the file. However, it is unclear if existing oversized WAL files will automatically resize. Users are advised to check the size of their WAL file using the Command Prompt or third-party tools, and if it remains large, to delete it following the update documentation.

Winsage

July 10, 2026

Microsoft Confirms Windows 11 Bug That Eats 500GB Of Your Storage

Microsoft has acknowledged a significant issue affecting Windows 11 users on versions 24H2 and 25H2, where a bug can consume up to 500GB of storage, leading to critical space shortages and potential system failure. This bug has been reported since May 2025, with a solution disclosed on June 29, but it will not be automatically rolled out until July 14. Users can check if they are affected by navigating to Settings > System > Storage and examining the “System files” category; if it exceeds 100GB, they are likely impacted. The issue is linked to a hidden file named CapabilityAccessManager.db-wal in the “%ProgramData%MicrosoftWindowsCapabilityAccessManager” directory. Microsoft has released an optional update (KB5095093) to address the bug, which also includes feature previews that may affect performance. Users are advised against deleting the problematic file to avoid disrupting WiFi connectivity and screen capture functionalities. An automatic fix will be deployed during the July 14 update.

Winsage

July 9, 2026

Microsoft Confirms Windows 11 Bug That Can Consume Over 500GB of Storage Through Permission Log File

Microsoft has acknowledged a bug in Windows 11 that causes the Capability Access Manager's write-ahead log file to expand indefinitely, potentially exceeding 500GB of storage on affected devices. This issue is addressed in update KB5095093, which includes builds 26200.8737 and 26100.8737. Users can manually install this update via the optional updates section of Windows Update or wait for its automatic rollout during the July 2026 Patch Tuesday. The Capability Access Manager manages app permissions and logs usage of privacy-sensitive features, but the WAL file continues to grow unchecked on affected systems. The file can reach sizes from 70GB to over 513GB. To check if a system is affected, users can check storage settings or use Robocopy to verify the file size. The update is available through the Optional updates section and will be included in the cumulative update on July 8, 2026. The excessive size of the WAL file can lead to critical storage shortages and related issues, but it does not compromise the security or core functionality of the permission system. Microsoft has not confirmed if Windows 11 26H1 Insider builds are affected.