Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix 'port already allocated' Error in Docker Compose

You run docker compose up and see port is already allocated. This means...

Fix Git 'index.lock' File Exists Error in IntelliJ

If you see an error like fatal: Unable to create 'project/.git/index.lock': File ex...

Recover Lost Commits After Git Detached HEAD
You've made commits while in a detached HEAD state, and now you can't see them on any bra...

Fix Docker Nginx 502 Bad Gateway Upstream Error
When running Nginx as a reverse proxy in Docker, a 502 Bad Gateway error with 'upstream' ...

Fix Docker Compose Port Allocation Errors
When you run docker compose up and see an error like "port is already alloca...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer
You try to clone or pull from a remote repository and get: fatal: unable to access 'htt...


    Issue queue
Sitemap
Fix Windows 11 Blue Screen After Update with Recovery Environment
Fix Windows 11 BSOD After Cumulative Update
Cloudflare Wildcard Subdomain Error Guide
Resolve Git Remote Already Exists When Changing URL
Server Resource Exhaustion: Fixing Cloudflare 522 Errors
How to Fix nginx upstream connection refused on localhost
VSCode Permission Denied in Docker Container Fix
Fix Remote Desktop Expired Password Error
Resolving Same-Line Git Merge Conflicts
Windows 11 Update Causing Blue Screen? Try a Clean Boot
Cloudflare DNS Propagation: How to Confirm
Nginx 502 Bad Gateway in Docker: How to Fix
Desk note

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