How to Fix Windows Defender Firewall Blocked App
You try to open an app, but it either won't start or can't connect to the internet. A common caus...
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1. Reproduce
2. Isolate
3. Apply
4. Verify
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View listWindows Security Antivirus Not Detecting Threats: How to Fix
If you suspect Windows Security (formerly Windows Defender) is not detecting threats, you might s...
Fix OneDrive 404 Not Found & File Access Denied Errors
You try to open a file in OneDrive and see a 404 Not Found message, or you get an Access Denied e...
Fix Missing Windows Security After Update
After a Windows update, you might find that Windows Security (formerly Windows Defender) is missi...
Fix Windows 11 Activation Auto-Start Not Working
If Windows 11 doesn't automatically activate after a hardware change or update, or if the activat...
Fix 'Windows Defender Command Not Found Access Denied'
You type MpCmdRun.exe -Scan -ScanType 2 or another Defender command in Command Promp...
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