Windows Defender behaving oddly...

Hi.

Several manual attempts to run Defender in Windows 10 Pro on a Dell 7280 (RAM 16g and SSD at 65% capacity) resulted in only 15 files being scanned using both Quick and Full scan modes.

Windows, Defender and all updates appear to be current.

Defender was set for regular periodic scans. I decided to initiate a manual scan because after a restart, the system hesitated while responding to keyboard commands innocuous as screen brightening.

I can't say I've ever encountered such Windows Security behavior.

No other antivirus lives on the system. Only HouseCall has been run in the past, but not recently.

Please be so kind as to opine.

Thank you.

This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread.

Question Info

Last updated December 18, 2019 Views 240 Applies to:

Answer

A. User

Given that other posters have begun reporting similar Defender irregularities, to which lacrumb has pointed, would it be reasonable to believe the issue followed a faulty update?

Yes.

This issue is probably triggered by the new Defender Antimalware Version 4.18.1908.7.

Microsoft has to fix it.

Here's a German article. You could use Translate or another translator to read it...

>https://www.deskmodder.de/blog/2019/09/18/windows-defender-aktuell-mit-einem-scan-problem-durch-die-antimalware-version-4-18-1908-7/

1 person was helped by this reply

Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.