Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix NET::ERR_CERT_AUTHORITY_INVALID in Chrome

When Chrome shows 'NET::ERR_CERT_AUTHORITY_INVALID', it means the browser cannot verify t...

Fix Nginx 502 Bad Gateway with Docker Environment Variables

If you see a 502 Bad Gateway from nginx running in Docker, it usually means ngin...

Fixing Nginx Upstream Connection Refused and Permission Denied

If you see connect() failed (111: Connection refused) or connect() failed (13:...

Fix Chrome Extensions Not Loading Configuration
You install a Chrome extension, configure it carefully, and then—nothing. The extension icon is g...

How to Fix Node.js Heap Out of Memory in VS Code
If you see FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaS...

How to Push a Git Detached HEAD to Remote
You're working on a Git repository and realize you're in a 'detached HEAD' state....


    Issue queue
Sitemap
Step-by-Step Cloudflare Wildcard Setup
How to Fix pnpm 'Cannot Find Module' Error
Python Virtual Environment Not Activating in Git Bash: Fixes
Docker Compose Port Already Allocated Fix
Fix pnpm Missing Peer Dependency Warnings
Fix 0x800704ec Real-Time Protection Error
Mac Docker No Space Error: Cleanup and VM Resize Guide
Chrome Black Screen Fix When Hardware Acceleration Is On
Cloudflare SSL Full Strict Error: Self-Signed Certificate
Fix Python UnicodeDecodeError for sys.stdin Input
Mac Docker Container Exits Right After Start
How to Fix DNS Probe Finished NXDOMAIN After Windows Update
Desk note

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