Revert changes

[LeontGreek]

Hello!

I have applied the remover, but I didn't make a restore point. Is it possible to revert somehow the changes and reinstall all these components? As the last way I think to reinstall windows 11, but I don't want it, because I have many installed programs and settings.

Thank you in advance!

[xavierOu812]

I am on Windows 10 21H2. Last night I set a restore point to test Defender Remover version 12.7.2. After using the OS for a bit I used system restore to bring back Defender. The restore did not work and Defender was still removed. Whatever 12.7.2 does System Restore cannot revert.
I was able to bring back Defender today by using Defender Remover 12.5. I noticed in the release notes that there are options to restore Defender in this version.
Run 12.5 as administrator and choose option R. Other versions may have this menu as well. If 12.7.2. has it I don't know how to access it.

[annarana]

I tried to do that on windows 11 but doesn't work. Do you have any other suggestions?

[xavierOu812]

Back up data.
Reinstall operating system.

[darknessdoctor]

i can't revert too same my restore point got messed up and others apps now are infected too i can't use windows i need to revert this any other script to enable it i have the 'threat and protection tab misssing

[lowercaselowen]

thanks to all this, im just going to image the system first - then apply this fix - I have several crypto systems that are stand alone and need minimal defense software

[PanBambaryla]

I was able to recover with 3 x Windows 11 PRO 23H2 machines in the following way:

1. get a working PC with the same system version and export HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\wscsvc
2. import this non-existent key on the machine which has defender removed
3. do the same with the key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SecurityHealthService
4. run as admin sfc /scannow which do some repairs
5. run as admin DISM.exe /Online /Cleanup-image /Restorehealth
6. reboot your PC
7. do a quick Windows Update to get a small Windows Security Update which does not require reboot

Not sure if it was relevant but I think I have repaired and reset Windows Security after step 3 like in the following link:

https://www.thewindowsclub.com/reset-windows-security-app-in-windows-10

and voila - security center is opening again, no more problems.