bug in Windows 11

Winsage
July 18, 2026
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 9, 2026
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
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 6, 2026
A hidden bug in Windows 11 can consume up to 500 GB of storage due to the CapabilityAccessManager.db-wal file, which should only occupy a few megabytes but can grow significantly on certain systems. Users can check for this issue using applications like TreeSize or by executing a command in the Windows Command Prompt. Microsoft has acknowledged the problem and provided a fix in the optional June 2026 update, with a broader rollout planned for the July Patch Tuesday update. Users are advised not to modify or delete the file to avoid further complications.
Winsage
March 5, 2026
A critical bug in Windows 11 builds 24H2 and 25H2 is causing users with Ethernet connections to lose internet access after installing updates KB5066835 and KB5065789. Users have reported issues on Microsoft’s Q&A forums, and rolling back the operating system is recommended. Possible fixes include performing a full network reset, flushing DNS and resetting TCP/IP via Command Prompt, editing the registry, and using hardware bypass solutions like USB-to-Ethernet or USB-to-WiFi adapters.
Winsage
November 13, 2025
A bug in Windows 11 allowed Task Manager to persist after users attempted to close it, leading to multiple instances and potential performance issues. Microsoft addressed this problem in update KB5067036, which fixed the Close button on Task Manager that did not fully terminate the process. The update also resolved a delay when signing into Windows using a gamepad, where controllers became unresponsive for about five seconds.
Winsage
October 13, 2025
Microsoft has resolved the "update and shut down" bug in Windows 11 with the release of Build 26220.6760 on September 29, 2025. This bug caused systems to reboot automatically instead of shutting down when users selected the "update and shut down" option. The fix ensures that pending updates no longer trigger automatic restarts during a shutdown request. Windows Insiders in the Dev or Beta channels can access this fix, while non-Insider users are advised to wait for the stable release.
Winsage
October 8, 2025
Microsoft has resolved a bug in Windows 11 that caused issues during the update installation process, where users experienced unexpected reboots after clicking "Update and shut down." This problem had affected users for over two years and was also present in Windows 10. A fix is available in the beta version of the OS, with plans for a broader rollout. Additionally, Microsoft has fixed two other bugs in Windows 11 related to Windows Hello face recognition and Bluetooth connectivity.
Search