Fix 'Windows Defender Firewall Has Blocked' Error
You see a notification that Windows Defender Firewall has blocked an app or feature. This usually...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labFix Windows Search 404 Error by Rebuilding the Index
When Windows Search throws a "404 error" or returns no results, the search index is often corrupt...
How to Fix Windows Activation SSL Certificate Error
When you see an SSL certificate error during Windows activation, it usually means the system can'...
Fix Chrome ERR_TUNNEL_CONNECTION_FAILED on Windows 10
If you see ERR_TUNNEL_CONNECTION_FAILED in Chrome while browsing on Windows 10, ...
How to Troubleshoot Network Connectivity Issues with Command Prompt
When your internet stops working or you can't reach a specific server, Command Prompt offers a qu...
Fix Windows Search Indexing Turned Off Error
If you search for a file or email and get no results, or the search box says "Indexing is turned ...