Software troubleshooting desk

Practical fixes for tool errors, setup blocks, and workflow issues.

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix Nginx Upstream Connection Refused in Proxy Pass

When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix 'git remote add origin already exists' Error
When you run git remote add origin <url> and see fatal: remote origin al...

How to Fix Nginx 'Upstream Connection Refused' Error
When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...

Fix VS Code Terminal Not Opening Due to Settings
You click the terminal panel icon in VS Code, but nothing happens. The panel doesn't slide up...

Fix Git 'index.lock' File Exists Error in SourceTree
If you use SourceTree and see an error message like fatal: Unable to create 'path/to/.g...

Fix Chrome Black Screen on Mac: Hardware Acceleration Issue
You open Chrome on your Mac, and the screen goes black—or parts of the page are garbled. This oft...


    Issue queue
Sitemap
Windows Update 0x80070005: Permission Fix Guide
Cloudflare SSL Full Strict Troubleshooting Steps
Python Dependency Conflict Resolution Guide
Fix DNS Probe Finished NXDOMAIN for a Specific Website
How to Fix 'Git Remote Origin Already Exists'
How to Set Up and Fix Wildcard Subdomains in Cloudflare
Resolve 'fatal: refusing to merge unrelated histories'
Troubleshooting Cloudflare 522: Connection Timeout
How to Give VS Code Permission to Save Files
How to Fix Docker Compose MySQL Port Binding Error
Fix Bluetooth Problems in Windows 11
Fix Windows Update Error 0x80070005 by Taking Ownership
Desk note

    Troubleshooting paths
Home
Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities