Windows Defender ran into a problem

Question

I recently installed a game and uninstalled it. While installing, it created a "AiO Files" directory in the C drive. Which asked for permission in a dialogue box and I gave it. As windows defender found virus in the game files, I ran a offline scan. After the system booted up, I saw windows Defender to be turned off and asking for Restart. Clicking restart says, "We ran into a problem" I saw in the C drive properties>security tab, the Groups and user names shows "Unknown account" with account ID. It seems to have special access in the permissions menu. I am assuming this account is the cause of the problem as I have tried setting value of "DisableAntiSpyware" to be 0 and the system is free of viruses. Can anyone help me to change it to Users which I guess was before giving permission to modify files and thanks in advance.

Answer 1

Hi Debjit,

Thanks for your post. Generally speaking, Windows Security incorporates the Microsoft Defender antivirus utility. However, some users can’t select to run Microsoft Defender scans because of an error message that says: “Unexpected error. Sorry, we ran into a problem.” That “Unexpected error” message pops up for some users when they select the Virus & threat protection tab in Windows Security.

Consequently, the Virus and threat protection tab is inaccessible. That error means there’s an issue with the Windows antivirus tool. This is how you can resolve the “Unexpected error” issue.

Reference: How to Fix Windows Security’s “Unexpected Error” in Windows 10 & 11 (makeuseof.com)

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it. Hope this helps.

Some of the services that are necessary for Windows Defender to function include:

Windows Defender Antivirus Service  (WinDefend).

Security Center  (Wscsvc)

Windows Security Service   (SecurityHealthService).

Using the link above as a guide, determine if any of these are "disabled" or "missing".

It helps to put the Task Manager into alphabetical order, to locate the service you want.

Best Regards,

Ian Xue

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