Fix Windows Update 'Permission Denied' Errors
You click 'Check for updates' in Windows Update, but instead of downloading, you get an error lik...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labEnable Windows Security Manually When It Fails to Start
If Windows Security (formerly Windows Defender) fails to start, you may see an error like "This a...
Fix 'Port Already Allocated' Error in Windows Defender
You open Windows Defender Security Center or try to run a scan, and you see an error saying a por...
Fix High CPU Usage from Windows Activation Failure
You might notice your PC fan running loud or sluggish performance after a Windows update or hardw...
How to Clear PowerShell Module Cache on Windows 10
If PowerShell modules fail to load, show outdated versions, or cause errors after updates, a corr...
Fix Windows Security Can't Connect to Server Error
When you see "Windows Security cannot connect to the server" while trying to sign in or access a ...