Solution 2: Remove your AntivirusĪnother reason for the error appearing could be your third-party antivirus software that is installed on your system. If you use a guest or any other non-administrative account, it will result in the error popping up so make sure you’re clear there. If you have multiple accounts created on your system, log in to the administrative account. To solve the error, go through the following solutions:- Solution 1: Sign in as an Administratorīefore you try to turn on Windows Defender, make sure you are signed in as an Administrator. If you’ve set the Windows Defender to disabled in the Group policies, that could be stopping you from turning it back on. Another reason for this error emerging would be group policies.
If you’ve been using a third-party antivirus software before the error popped up, it could be due to the antivirus interference.
