Many users have reported annoying issues Microsoft Defender, Antivirus built into Windows 10. They started appearing after the distribution of the latest update Thousands of files In the program folder. The bug therefore caused an increase in occupied space and a slowdown in backup operations.
Microsoft Defender – Thousands of files on disk
The error appeared with Microsoft Defender 1.1.18100.5, which was later resolved Version 1.1.18100.6. For some unknown reason, the antivirus started writing thousands of files into the folder C:ProgramDataMicrosoftWindows DefenderScansHistoryStore. These are named files (probably MD5 hashes) with numbers and rows of letters. Size is very small (1 or 2 KB), but some users have reported the presence Millions of files It takes up many GB of disk space. As a result, backup operations slow down.
Looks like the problem occurred Real-time security Issued by Microsoft Defender. In fact, high-speed file creation slows down after disabling the feature. Some users have shared a PowerShell script for automatic file deletion. Admin privileges are required to access this folder.
After receiving various reports, Microsoft has promised to release a solution. It happened a few hours ago Windows Update. All you have to do is search for and download the update. Users can optionally install one Security solution More complete.
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