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Inside PowerShell, type “ sfc /scannow” and press “ Enter“.

Note: If you are running the “ creator’s update” version of the Windows 10 only then you will see the Powershell option instead of the command prompt option.

Select “ Command Prompt( Admin)” or “ Powershell( Admin)” from the list.

Press “ Windows” + “ X” button simultaneously.

Therefore, in this step, we will be initiating an SFC scan. After checking, it automatically prompts Windows to replace them. Solution 1: SFC ScanĪn SFC scan checks the whole computer for any missing/corrupted drivers and registry files. Make sure to implement these in the specific order in which they are provided to avoid any conflicts. Now that you have a basic understanding of the nature of the problem, we will move on towards the solutions.

Updates: If the computer has not been updated to the latest version provided by Microsoft it might be vulnerable to certain viruses that can’t be stopped by the Defender.

The registry controls every function and service inside the computer, therefore, if the Windows Defender has been disabled by any malicious software or virus through the registry it won’t turn on unless the value is cleared.

Disable AntiSpyware: This is the name of a registry value that implements itself in the computer’s registry and prevents the Windows Defender from running.

Third Party Application/service: It is also possible that a third party service or an application might be interfering with important elements of the Windows Defender and preventing it from functioning correctly.

It might have been configured automatically or the user might have configured it manually.

Group Policy: In some cases, the group policy might be configured to disable the Windows Defender.Sometimes, certain malware or viruses implement themselves on the computer along with an application and disable the Windows Defender through the registry. Damaged Drivers/Registry: It is possible that important drivers or registry entries have been corrupted due to which this error is being triggered.