Run sfc /scannow in Command Prompt to fix corrupted system files that the registry relies on.
Copy and paste the following header: Windows Registry Editor Version 5.00 download the windows defender default registry file
By importing a clean registry (.reg) file, you reset these configurations to their factory state. How to Download and Restore the Registry File Run sfc /scannow in Command Prompt to fix
If you prefer not to download files from third-party sites, Windows has a built-in way to "re-register" the registry entries for security: Open as Administrator. "Your Virus & threat protection is managed by
"Your Virus & threat protection is managed by your organization." Error code 0x800704ec when opening Security Center.
This refreshes the Defender UI and its associated registry triggers. Important Safety Precautions
Restoring your Windows Defender registry settings is the quickest way to fix service errors, grayed-out buttons, or cases where the antivirus has been disabled by malware.