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.