Fix Windows Defender Connection Refused or Permission Denied Errors
If you see "connection refused" or "permission denied" when trying to start or update Windows Def...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labChecklist for Windows Security Module Errors
When Windows Security (formerly Windows Defender) throws module errors, you might see messages li...
Fix Remote Desktop Black Screen on Ubuntu
You connect to your Ubuntu machine via Remote Desktop (RDP or VNC) and see only a black screen. T...
Fix Git SSL Certificate Verification Failed Error
If you see fatal: unable to access 'https://...': SSL certificate problem: certificate veri...
Fix Windows Search Token Expired Registry Error
If you see a "token expired" error when using Windows Search, it usually means the search index h...
How to Fix Remote Desktop Network Error 0x204
When you try to connect to a remote PC and see Error code: 0x204, the connection...