How to Reset Windows Defender Settings
If Windows Defender (Microsoft Defender Antivirus) is acting up—won't open, shows error messages,...
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2. Isolate
3. Apply
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View listFix Windows Security Version Mismatch Permission Denied
You might see a 'version mismatch' or 'permission denied' error when opening Windows Security, ru...
Fix Port Already Allocated Error for Windows Update on Windows 10
You try to run Windows Update but get an error message like 'port already allocated'. This usuall...
Fix 'Windows Defender Not Recognized' Error in Command Prompt
When you type MpCmdRun or Windows Defender in Command Prompt and see
Fix High Memory Usage After Windows Update
After a Windows update, you might notice your PC running slower, with high memory usage in Task M...
Fix Windows Security Not Starting After Update
After a Windows update, you might find that Windows Security won't open, or it shows a blank wind...
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