Windows Security Troubleshooter
The Troubleshooter will automatically diagnose and fix the following problems with security in Windows, such as:
User Account Control – UACWindows FirewallData Execution Protection (DEP) to prevent security threats.
The Troubleshooter will automatically:
Check Windows security features and enable them if neededFix Phishing or SmartScreen filtersFix and reset User Account Control (UAC)Fix Data Execution Prevention (DEP)Reset and fix Windows Firewall.
Think you need to run this Troubleshooter? Head over to the Windows Security Troubleshooter page on Microsoft.com, click on the Run Now button, and let it do the work for you! It runs on Windows 10/8.1/8/7/Vista. [UPDATE: This tool appears to have been taken down]. The Windows Malware Prevention Tool will help you harden your Windows security, whereas this Windows Security Troubleshooter will fix Windows security problems. Read: