Automatically fix Windows security issues

Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features.

  • Select the Download button on this page.

  • In the File Download dialog box, click Run or Open, and then follow the steps in the Windows Security Troubleshooter.

Notes: 

  • This troubleshooter might be in English only. However, the automatic fix also works for versions of Windows in other languages.

  • If you’re not on the computer that has the problem, save the troubleshooter to a flash drive or a CD, and then run it on the computer that has the problem.

Download

What it fixes

  • Checks the following Windows security features and enables them if needed

  • Phishing Filter or Smartscreen Filter

  • User Account Control (UAC)

  • Data Execution Prevention (DEP)

  • Windows Firewall

  • Antivirus protection status and updates

Runs on

  • Windows 7

  • Windows 8

  • Windows 8.1

  • Windows 10

See also

Stay protected with Windows Security

What's new in Windows Security

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