It can help to protect your setup from viruses, malware, and other threats.
However, sometimes it can run into some errors.
For example, you may encounter the problems of Windows Defender exclusions not working and protection history not showing.
Today we are going to show you another Windows Security error Windows Security shows unknown.
Lets see a real example first.
I noticed this today but not sure if it started today or earlier.
They are all still showing as Unknown.
I do not have any other anti-virus or security providers installed on this system.
What’s wrong and how can I correct it?
answers.microsoft.com
When Windows Defender shows unknown, try the methods below to fix it.
How to Fix the Windows Defender Unknown Issue
Fix 1.
Restart/Refresh the Windows Security Service
Step 1.
Typeservicein the Windows search box and selectServicesfrom the best match result.
In the services window, scroll down to find and right-clickWindows Security Service.
if it is already enabled, it’s crucial that you chooseRefreshfrom the context menu.
If it is not running, you are supposed to chooseRestart.
Click to Tweet
Fix 2.
TypeWindows PowerShellin the Windows search box and right-click it to selectRun as administrator.
In the User Account Control window, select theYesbutton.
In the command line window, copy and paste the following command line and pressEnter.
After that, check whether the Windows Defender unknown issue has been resolved.
If not, you canuninstall and reinstall Windows Defender.
Fix 3.
Disable Third-Party Antivirus
Third-party antivirus may conflict with Windows Defender causing Windows Security shows unknown.
Fix 4.
Uninstall Recent Windows Updates
A large number of users suffer from the Windows Defender unknown issue after updating Windows.
Therefore,uninstalling Windows updatesis also an effective solution to the unknown error.
lost in multiple data loss situations, such asrecovering lost files after MBR to GPT conversion.
nudge the following button to free download MiniTool Power Data Recovery and give it a try.
Now read this post to know how to extend Windows 11 rollback time.
