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 on Port 80

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

Git Fatal: Refusing to Merge Unrelated Histories – Workaround

You try to merge two Git branches and get this error:

fatal: refusing to merge unre...

Docker Compose Environment Variable from Shell Not Working: Fixes
You set an environment variable in your shell, but Docker Compose ignores it. This is a common pi...

How to Manually Remove a Stuck Git index.lock File
If Git operations suddenly fail with an error like fatal: Unable to create 'path/.git/i...

Fix Windows Defender Real-Time Protection Not Turning On After Update
After a Windows Update, you might find that Windows Defender's real-time protection is stuck ...

Fix Windows 10 Search Indexing Not Working After Update
After a Windows 10 update, you might notice that File Explorer search returns no results or is ex...


    Issue queue
Sitemap
Troubleshooting Large File Pushes in Git
Troubleshoot Windows 10 Taskbar Icon Issues
Fix Python Permission Denied When Installing Packages
Windows 11 Bluetooth Pairing Steps
Resolve npm install EACCES Error in Home Folder
Subdomain DNS Not Propagating in Cloudflare? Fix
How to Find and Fix Node.js Memory Leaks
How to Rebuild Windows Search Index
Fix 'Python' Command Not Found in Windows 10
Fix 'port already allocated' Error in Docker Compose
Fix Cloudflare Origin Certificate with Let's Encrypt
Git Push Rejected: Non-Fast-Forward Error Fix
Desk note

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