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 Nginx Upstream Connection Refused in Docker
You have Nginx running, either on the host or in a container, proxying to another Docker containe...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer on GitHub
If you see fatal: unable to access 'https://github.com/...': SSL certificate proble...

Fix Docker Compose Port Already Allocated for PostgreSQL
You run docker-compose up and see an error like "Error starting userland pro...

How to Disable pip's Externally Managed Environment Warning
If you see the error error: externally-managed-environment when trying to install Py...

Why Your Python Virtual Environment Isn't Activating
You created a virtual environment but when you run the activation command, nothing happens or you...


    Issue queue
Sitemap
Docker Build Context Canceled: How to Fix It
Windows 11 Assistant Stuck at 99% Fixes
Fixing Python Bytes to String Encoding Errors
Troubleshoot Windows 11 Install Assistant 99% Hang
Fix Windows 11 Wi-Fi Connected but No Internet Access
VS Code Cannot Save File – Permission Fix
Reset Network Settings in Windows 11 When You Have No Internet
Fix Windows 10 Cannot Access Shared Folder Error
Resolving Package Version Conflicts in Python
How to Fix Python Memory Error When Reading Large Files
Fix Docker Build Context Canceled by Symlink Errors
Python Memory Error When Processing Large Text File: Fixes
Desk note

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