Troubleshoot Cannot enable Windows defender

[SifhX]

Briefly explain your current issue(s)

Windows still saying that a third party antivirus is running , all options in Windows defender settings are greyed

Steps taken to resolve, but have been unsuccessful

uninstalled using 'Geek uninstaller' and bitdefender clean tool , reinstalled bitdefender and uninstalled it again

Hi all,

Anyone already got this issue ? How can I fix that without reinstalling whole system because its not my computer

Thanks

 

[Deleted Member 333v73x]

Hi all,

Anyone already got this issue ? How can I fix that without reinstalling whole system because its not my computer

Thanks

If in the unlikely case that any problems occur - it is at your own risk.
Delete Bitdefender folders found below, search this:

%appdata% %programfiles% %programdata% then restart your computer - tell me what happens

If this fails then please quote me in your post explaining what happens @Anti-Malware Reviewer

 

[SifhX]

Thanks but comodo was not installed but only Bitdefender and everything has been deleted, every files and folders.

 

[Deleted Member 333v73x]

Thanks but comodo was not installed but only Bitdefender and everything has been deleted, every files and folders.

Please restart your computer.

@SifhX Run CCleaner http://download.piriform.com/ccsetup513.exe and tell me what happens after clean. Scan Registry and normal clean, make sure to backup your registry just in case and restart after the clean, get back to me

 

[Soulbound]

most likely a registry key still in system. Run the registry scan and clean it under CCleaner.

If it fails, reinstall BitDefender, then use their uninstall too to uninstall. On your reboot, WD should be active.

Edit: noticed you in W10 Pro
Below should work as well:
Type gpedit.msc in windows search panel and go to Local Computer Policy -> Computer Configuration -> Administrative Templates -> Windows Components -> Windows Defender
Open "Turn off Windows Defender" and set it to "Disabled"

Now go to settings to turn on Windows Defender.

 

[SifhX]

thanks for your reply, unfortunately, Nothing worked , I'm awaiting further instructions from the pc's owner

 

[Ink]

Have you checked with the built-in Troubleshooting in Windows 10? Or ran System File Checker (sfc /scannow)?

 

[ravi prakash saini]

hvae you tried starting windows defender service through services.msc

 

[illumination]

thanks for your reply, unfortunately, Nothing worked , I'm awaiting further instructions from the pc's owner

Open Regedit, click "Edit" then click "find" type Bitdefender, click find next. You can use F3 to toggle to each one that the editor finds.

 

[Deleted Member 333v73x]

Is it working now?

 

[XavierGaming]

I had the same problem in the past, but this method fixed it for me.

First, you may try to uninstall Bitdefender using Bitdefender's official uninstaller.

Uninstall Bitdefender

After the uninstall, download Windows Repair All In One from Tweaking.com

Tweaking.com - Windows Repair Free/Pro

After the download, reboot to safe mode and run the program and do a full system repair.

 

[SifhX]

We tried everything, my last test was trying to install and uninstall another antivirus
We installed Forticlient and now Windows says that Forticlient is active after uninstall
So the problem is from Windows


I will ask him to reset the system

thanks