How to Reinstall Windows defender

Question

I recently permanently deleted windows defender from my pc using a tool found on github and then i factory reseted my pc a few days later And after I factory reset it windows defender was still missing but real time protection ect was now turned on with no way to even turn it off and now everything i download is getting flagged and most of them are false positives and I cant turn off real time protection

Answer 1

Hi, I'm Bernard, a fellow Windows user. I'm happy to help!

To reinstall Windows Security/Windows Defender, kindly follow the steps below:

Open Terminal (Admin) or Windows PowerShell(Admin) (Press Windows key + X then click Terminal(Admin))

 

Copy, paste, and enter the command below:

Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage

Then hit Enter. Once the process is done, restart the PC and check.

If the issue persists, I suggest doing an in-place upgrade, which will update the device to the latest version and repair all issues without deleting any files.

 

Kindly follow the steps from this link:

https://learn.microsoft.com/en-us/answers/questions/4252110/how-to-run-in-place-upgrade-in-windows-11