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 Fix Microsoft Store File Locked Error
If you see a 'file locked' error when trying to install or update an app from the Microsoft Store...
PowerShell Port Already Allocated: Troubleshooting Checklist
When you try to start a PowerShell HTTP listener, create a TCP listener, or enable PowerShell Rem...
Fix Windows Terminal Module Not Found Permission Denied
When you see 'module not found' or 'permission denied' in Windows Terminal, it usually means the ...
Remote Desktop Version Mismatch: A Practical Checklist
You try to connect to a remote desktop, but instead of a successful login, you get an error about...
Windows Defender Configuration Settings Guide
Windows Defender (now Microsoft Defender Antivirus) is the built-in security solution for Windows...
Topic paths
Quick titles
Cloudflare 525 Error After SSL Update: Causes and FixesFix Windows Search Service Not Running ErrorHow to Fix Outlook Exchange Configuration ErrorSetup Guide for Windows Defender Offline ScanFix OneDrive 502 Bad Gateway Error from Proxy SettingsCommand Prompt Version Mismatch TroubleshootingHow to Unlock a Chrome Profile File: Practical StepsWindows Sync Conflict with Security Dependencies