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 502 Bad Gateway in Docker Containers

An Nginx 502 Bad Gateway error when proxying to a Docker container usually means Nginx cannot rea...

Fix 'node sass build failed' During npm install

When running npm install, you might see an error like "node sass build f...

Fix Git Stash Error: index.lock File Exists
You run git stash and see: fatal: Unable to create 'path/.git/index.lock&#...

How to Fix Cloudflare Error 521: Origin Server Unreachable If you see Cloudflare error 521, your origin server is not responding to Cloudflare's request...

How to Fix Edge Sync Stuck on Preparing Sync You open Microsoft Edge, click your profile, and see 'Preparing sync' — but it never fini...

Fix Nginx Permission Denied Errors on Ubuntu If you're seeing permission denied errors in your Nginx error log on Ubuntu, the...

Issue queue Sitemap Stop VS Code Autocomplete From Disappearing Fix Docker Volume Permission Denied for WordPress Troubleshooting Python Virtual Environment Activation Python Terminal in VSCode Not Working Fix Windows Defender Real-Time Protection Stuck on Turning Off How to Solve Python Memory Errors with Large Files Fix Nginx Upstream Connection Refused Timeout Error Understanding and Fixing Git Unrelated Histories How to Use Git LFS with GitHub: Setup and Troubleshooting Troubleshooting Nginx Infinite Redirects Cloudflare SSL Full Strict Configuration Checklist Cloudflare 521 Error: Origin Server Unreachable Fix Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities