Knowledge base for software setup, errors, and daily tool work.

Fix 'Putty Connection Refused' Error on Localhost

When you try to connect to localhost with Putty and get 'connection refused', it usually means th...

Setup Correct Permissions for GitHub Actions

When your GitHub Actions workflow fails with a permissions error, it's often because the default ...

Fix Nginx Config Test Fails with 'upstream host not found'

You run nginx -t and get upstream host not found. The config test fails...

Fix 'Permission Denied' and 'Path Not Found' on Windows

When you see "permission denied" or "path not found" errors in Windows, it usually means Windows ...

Fix Windows Defender Stuck on Loading Registry

You open Windows Defender, but it stays on a loading screen with a spinning circle—often stuck on...

OneDrive Invalid Configuration Sync Issue Fix

Understanding the Problem

You open OneDrive and see an error like "Invalid configuration"...