Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fixing Nginx Upstream Connection Refused on Port 443

You see "upstream connection refused" in your Nginx error log when proxying requests to p...

Git Merge Conflict Checklist Before Merging

You're about to merge a branch, but you've been burned by merge conflicts before. This ch...

How to Fix Git Index Lock File Exists Error

If you see an error like fatal: Unable to create 'path/to/repo/.git/index.lock': Fi...

Windows 11 Wi-Fi Connected but No Internet: Step-by-Step Fix
You're connected to Wi-Fi, but websites won't load and apps show no internet. This is a c...

How to Fix Nginx Configuration Test Failed Error
When you run nginx -t and see "test failed", it means nginx found a problem ...

Fix 'Python Virtual Environment Activate Command Not Found'
When you try to activate a Python virtual environment with source venv/bin/activate ...


    Issue queue
Sitemap
How to Bypass Chrome Certificate Warning
Windows Update Service Not Starting After SFC Scan Fix
Nginx Permission Denied Upstream Error Fix
Git Large File Push Timeout Troubleshooting
Docker Desktop Engine Stopped: Log Location & Troubleshooting
Python Version Mismatch Troubleshooting
Resolve Nginx 403 Permission Denied on CentOS
Fix Node.js Heap Out of Memory: Practical Steps
Fix Externally Managed Environment pip Error
Fix NXDOMAIN Error When Using Custom DNS Server
VS Code Permission Denied: Causes and Fixes
Resolving Git SSL Certificate Error Local Issuer
Desk note

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