How to Fix Windows Defender Not Starting Automatically
If Windows Defender (Microsoft Defender Antivirus) isn't starting automatically when you boot you...
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Browse labHow to Fix Windows 'Permission Denied' Errors
You try to open a file, run a program, or save a document, and Windows stops you with a 'Permissi...
Fix Windows Defender Crashing from Third-Party Antivirus Conflicts
If Windows Defender keeps crashing or turning itself off, a third-party antivirus is often the ca...
Fix Windows Security Authentication Failed in Remote Desktop
When you try to connect to a remote PC and see "Windows Security" followed by "Authentication fai...
How to Fix Windows Defender Service Not Running
If you see a message that Windows Defender is not running or the security center shows it's off, ...
Fix Putty Connection Refused on Port 22
You try to connect to a remote server with Putty on port 22, but you get 'Connection refused'. Th...