Windows Defender Protection History in Windows 11 shows past detections like viruses, malware, etc., along with actions taken to eliminate the threats.
Protection History is stored for about 30 days and gets cleared automatically if not done manually.
Before clearing history, ensure to scan PC for viruses using reliable antimalware tools like Malwarebytes or AVG Antivirus.
To clear Protection History manually, navigate to C:\ProgramData\Microsoft\Windows Defender\Scans\History and delete the History folder.
Alternatively, use Event Viewer to clear the history by opening it, expanding Logs, selecting Microsoft, then Windows, and clearing the log under Windows Defender.
Local Group Policy editor can also clear the history by enabling Turn on removing items from scan history via Computer Configuration settings.
PowerShell utility can be utilized by running Set-MpPreference -ScanPurgeItemsAfterDelay command to set the days after which history will be cleared.
If Protection History is already blank or causing PC crashes, troubleshooting steps can be taken to resolve the issue.
The article provides methods to fix Sleep Mode issues on Windows 11 and offers assistance for further queries regarding clearing Defender Protection history.
For more information and detailed instructions, refer to the original article on TechViral website.