Fix 'Windows Defender Firewall Has Blocked' Error
You see a notification that Windows Defender Firewall has blocked an app or feature. This usually...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Repair an Outlook Data File (.pst/.ost)
If Outlook suddenly won't open, shows error messages about a data file, or you can't see certain ...
Windows Terminal Permission Denied: Troubleshooting Checklist
When you see 'Permission denied' in Windows Terminal, it usually means the terminal lacks the nec...
Fix Windows Search Error 0x80070490: Cannot Connect
If you see "Windows Search cannot connect" with error code 0x80070490, it usually means the Windo...
Fix Windows Security Errors After Update
After a Windows update, you might see a yellow warning or red banner in Windows Security saying s...
How to Fix Remote Desktop Error Code 0x104
When connecting to a remote desktop, error code 0x104 typically appears as a pop-up saying "The r...
Topic paths
Quick titles
Fix Task Scheduler DNS Error Permission DeniedFix PowerShell Memory Leak and High RAM UsageWindows Search on Mac: Setup GuideHow to Fix Microsoft Teams Dependency Conflict ErrorRestore Missing Windows Security Start Menu IconFix Windows Search Indexing Service Port ConflictTroubleshoot Microsoft Store Not StartingFix Windows Activation Permission Denied After Update