https://answers.microsoft.com/en-us/protect/forum/all/unable-to-clear-protection-history-manually-in/44aa804a-4e1a-46e2-8082-f64ff897ebdd
Unable to clear protection history manually in windows defender security center in Windows 10 version 1903
If you need to delete now.
Delete folder Service C:\ProgramData\Microsoft\Windows Defender\Scans\History\Service .
After deleting the folder Service, off and turn on (OFF>ON) Real-Time protection and Cloud protection.
Unable to clear protection history manually in windows defender security center in Windows 10 version 1903
If you need to delete now.
Delete folder Service C:\ProgramData\Microsoft\Windows Defender\Scans\History\Service .
After deleting the folder Service, off and turn on (OFF>ON) Real-Time protection and Cloud protection.