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How do I fix common Windows Defender error codes?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

Windows Defender error codes are common error codes that can occur when using the Windows Defender program. These error codes can be caused by a variety of factors, including incorrect configuration settings, corrupt files, or malware. Depending on the error code, there may be different ways to fix the problem. In some cases, simply restarting the computer can fix the issue. In other cases, more advanced troubleshooting may be required.

1. Temporarily disable any other security software that might be running on your computer and then try running Windows Defender again

To temporarily disable other security software, follow these steps:

  1. Open the Control Panel.
  2. Click on the Security tab.
  3. Click on the Windows Defender icon.
  4. Under the General heading, click on the Change settings button.
  5. Under the Protection heading, click on the Change settings button.
  6. Under the General heading, click on the Disable all protection options button.
  7. Click on the OK button.
  8. Click on the Windows Defender icon again.
  9. Under the Protection heading, click on the Enable all protection options button.
  10. Click on the OK button.

2. Try running a scan with Windows Defender in Safe Mode

  1. Start Windows Defender in Safe Mode by pressing the Windows key + X, clicking on “Start”, typing “ defender”, and clicking on “Windows Defender”.
  2. Click on the “Scan” button.
  3. Select the type of scan you would like to run.
  4. Click on the “Start Scan” button.
  5. Wait for the scan to finish.
  6. If the scan results show any errors, click on the “Fix Errors” button.
  7. If the scan results show no errors, click on the “Close” button.

If you didn't find success with an option above, then try:

  1. Restart your computer and then try running Windows Defender again.
  2. Check for updates to Windows Defender and install any that are available.
  3. Uninstall and then reinstall Windows Defender.
  4. Run a full scan of your computer with a different security software package.
  5. Contact Microsoft support for assistance with resolving the issue.