How to Fix Windows Defender Firewall Blocked App
You try to open an app, but it either won't start or can't connect to the internet. A common caus...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security Service Unavailable Permission Denied
You open Windows Security and see 'Service unavailable' or 'Permission denied'. The app may not o...
Fixing Windows Security Invalid Configuration: Practical Steps
You open Windows Security and see 'Invalid configuration' or the app won't start. This usually ha...
Checklist for Windows Security Module Errors
When Windows Security (formerly Windows Defender) throws module errors, you might see messages li...
Fix PostgreSQL Connection Refused Due to pg_hba.conf
When a client gets 'connection refused' from PostgreSQL, the first thing to check is the pg...
Fix Port Already Allocated Error When Windows Security Is Off
You try to start a local server or application and get an error saying the port is already alloca...
Topic paths
Quick titles
Windows Activation Timeout After Reinstall FixHow to Fix OneDrive Not Signing In ErrorHow to Resolve BitLocker Sync Proxy ErrorsHow to Fix 504 Timeout in Windows Search with RegistryFix Task Scheduler Invalid Configuration Not Triggering TasksBitLocker Path Not Found: Command Line FixRemote Desktop Error 0x80070020: File Locked FixMicrosoft Store Not Working After Update: Troubleshooting Checklist