Capability Access Manager Archives

Winsage

July 18, 2026

Windows 11 bug hogging over 70GB of SSD storage, Microsoft confirms

Microsoft has acknowledged a bug in Windows 11 related to the Capability Access Manager (camsvc) that causes significant storage issues for users. The bug leads to an abnormal increase in the size of the CapabilityAccessManager.db-wal SQLite Write-Ahead Log file, which typically should be a few megabytes but has been reported to grow to 70-80 GB, and in some cases, over 200 GB or even up to 500 GB. This growth depletes available SSD space without any new files being added by users. The issue was highlighted by a user on the Microsoft Q&A forum, prompting others to check their disk space and find similar problems. Additionally, Windows Storage Settings misreported capacity usage. Microsoft confirmed the bug and released a hotfix in the KB5095093 update, urging users to install it to prevent further expansion of the log file.

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 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.

Winsage

July 8, 2026

Your Windows 11 PC might be hiding a 500GB storage bug

A bug in Windows 11 can cause significant disk space loss, with some users losing up to 500GB due to the CapabilityAccessManager.db-wal file, which should normally be a few megabytes. The file's size can exceed 100GB, indicating potential issues. Users can check their system file sizes through Settings > System > Storage. Tools like WizTree, TreeSize, or WinDirStat can help examine the folder contents. Microsoft has addressed the issue in the June 23 optional preview update, which improves disk space usage for the file. This update can be found under Settings and Windows Update, with a mandatory fix scheduled for the official Patch Tuesday on July 14.

Winsage

July 8, 2026

Here’s How to Check If Windows 11 Is Secretly Gobbling Up Your Disk Space

Users upgrading to Windows 11 have reported a significant decrease in available storage on their C: drive, attributed to the Capability Access Manager process consuming excessive disk space. Microsoft has acknowledged this issue and released an optional update (KB5095093) to improve disk space management for the CapabilityAccessManager.db-wal file, which can grow to several hundred gigabytes instead of the typical few megabytes. Users can check the file size in the directory C:ProgramDataMicrosoftWindowsCapabilityAccessManager, and tools like TreeSize or the command prompt can assist in this process. The CapabilityAccessManager.db-wal file functions as a write-ahead log for application access requests to system components, and its abnormal growth indicates it is not being properly merged back into the main database.

Winsage

July 6, 2026

Microsoft just confirmed that this Windows 11 bug is hoarding up to 500GB of your storage

Microsoft has acknowledged a storage issue related to the Capability Access Manager service in Windows 11, which can consume up to 500GB of SSD space due to a bug causing the log file, CapabilityAccessManager.db-wal, to inflate to gigabytes instead of a few megabytes. Users have reported file sizes reaching 200GB and even 513GB. The issue can be checked via Settings > Storage > System & reserved or by using a command in the Windows Command Prompt. Microsoft plans to address this in the June KB5095093 update, which will improve disk space usage for the log file, with updates expected to roll out starting July 14.