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.
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Select the Download button on this page.
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In the File Download dialog box, click Run or Open, and then follow the steps in the Windows Security Troubleshooter.
Notes:
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This troubleshooter might be in English only. However, the automatic fix also works for versions of Windows in other languages.
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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.
What it fixes
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Checks the following Windows security features and enables them if needed
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Phishing Filter or Smartscreen Filter
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User Account Control (UAC)
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Data Execution Prevention (DEP)
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Windows Firewall
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Antivirus protection status and updates
Runs on
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Windows 7
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Windows 8
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Windows 8.1
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Windows 10
