Hello,
Thank you for posting in Q&A forum.
To further troubleshoot this issue, please kindly try below steps:
1.Open file explorer and click on "View" on the top ->
check "show hidden items"
2.Navigate to the Detection History Folder:
C:\ProgramData\Microsoft\Windows Defender\Scans\History\ServiceDetectionHistory
3.Delete the detection history related files in the folder.
4.Meanwhile you can open Windows Security -> Virus & threat protection -> Protection history to clear the history.
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best regards,
Jill Zhou
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