Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

How to Fix Nginx 'Upstream Connection Refused' Error

When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...

How to Fix Cloudflare 521 Error on Apache Servers

If you see a Cloudflare 521 error, it means Cloudflare’s network cannot reach your origin server....

Fix VS Code IntelliSense Not Working in WSL

You open a project in VS Code connected to WSL (Windows Subsystem for Linux), and IntelliSense ju...

Fix Docker Nginx 502 Bad Gateway with MySQL

You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...

Chrome Extensions Not Loading: Fix 'Permission Denied' Errors

You install or update a Chrome extension, but it refuses to load. Instead, you see a Perm...

How to Fix 'fatal: refusing to merge unrelated histories' in Git
If you see fatal: refusing to merge unrelated histories when running git merge...

Issue queue Sitemap Docker Container Cannot Find Network on Restart How to Read Large Files in Python Without MemoryError Windows 11 Update Stuck at 0%: Manual Download Steps Fix WiFi No Internet on Windows 11 Using Command Prompt Cloudflare 522 Error Fix: Connection Timeout Solutions Windows 11 Update Stuck at 0%? Fix BITS Service Wi-Fi No Internet Windows 11 Troubleshooting Guide How to Force Windows Search to Exclude a Folder Windows Update 0x80070005 Fix: SFC Scan and Permission Issues Nginx Upstream Connection Refused: Causes and Fixes Slow IntelliSense in VSCode – Troubleshooting Guide Windows Update Error 0x800f081f – Media Creation Tool Fix Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities