Fix Windows Defender Can't Connect After Update
After a Windows update, you might see an error that Windows Defender can't connect to the service...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Security Not Opening or Running Slow
If Windows Security (formerly Windows Defender) won't open or takes forever to load, it's usually...
How to Fix Command Prompt Crashing on Open
You click Command Prompt, the window flashes for a split second, then disappears. This can happen...
Chrome Migration Stuck at 99%? Here's How to Fix It
You're switching to a new computer or reinstalling Chrome, and the migration progress bar stops a...
Fix 'Windows Update Port Already Allocated Permission Denied'
If you see "port already allocated permission denied" when running Windows Update, it usually mea...
How to Fix Chrome Profile Port Already Allocated Error
If you see an error message like "Profile port already allocated" when opening Google Ch...