Windows 10: Can't clear Defender history

Whenever I try to clear the history, a UAC prompt pops up, I click "Yes", and nothing happens. Is there a way to manually reset Defender?





:)

 

Windows Defender will not scan

I get that same alarm code with a text msg that says Defender can't complete scan because some history "could not be displayed. Please wait a few minutes and try again. If that doesn't work, clear the history and try again."

Why the heck should I have to clear and thus lose my history here? Why can't Defender read it as is?

This is annoying.

 

Cannot Clear Full History In Windows Defender

Sorry, I omitted the instruction line:



Right-click on the Start button and select Windows PowerShell (Admin), and then copy, paste, and enter this command:



Set-MpPreference -DisablePrivacyMode $True



I had this same problem with clearing the Full History page in the Windows Defender Security Center app the other day, and I found that the History tab in the classic Defender UI had been properly cleared, and that turning off Privacy Mode didn’t help.
But after another detection of the eicar test file, I was able to clear the Full History page.