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 on Docker Ubuntu

You're running Nginx as a reverse proxy inside Docker on Ubuntu, and suddenly you see

Fix Windows Defender Real-Time Protection Stuck Off in Windows 11

You open Windows Security, see real-time protection is off, click the toggle, and it turns back o...

Resolve Python Package Version Mismatch Errors

You run pip install and see errors like “package A requires package B==1.0 but y...

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

Fix npm run build Failed on Windows: Common Causes and Solutions When you run npm run build on Windows and it fails, the error message can be cryptic...

Fixing Python Memory Errors with Large Files: Alternative Libraries You're reading data from a large file—maybe a CSV, JSON, or Parquet—and Python crashes with a...

Issue queue Sitemap Git Pull Failed: index.lock Exists Fix Resolve VS Code Git 2FA Authentication Failure Remote Desktop Can't Connect to This Computer: Troubleshooting How to Fix Windows Search Indexing Slow Performance New Domain Cloudflare DNS Not Resolving How to Fix Docker Compose MySQL Port Binding Error Fix Wi-Fi Connected but No Internet on Windows 11 (No Router Restart) How to Stop Windows Explorer From Restarting After Crash Fix 'docker network not found default network' Error How to Fix Nginx 502 Bad Gateway with Docker Compose Variables How to Fix Chrome Error 0xc0000022 at Startup How to Handle Git Merge Conflicts When Pulling Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities