
Reset Windows Defender Service to Default Settings
If Windows Defender isn't starting, showing errors, or acting strangely, the service settings may...

If Windows Defender isn't starting, showing errors, or acting strangely, the service settings may...

You open Command Prompt and see an error like "Command Prompt has been disabled...

If you see errors like ERROR: A specified logon session does not exist or Unab...

You enter a valid Windows product key and get an error saying it's not accepted. This is frustrat...

When you open Microsoft Store and see an error like 'Authentication token expired' or 'Your authe...

You try to open a website in Firefox and see a full-page error: "Secure Connection Failed" with a...