Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix DNS Probe Finished NXDOMAIN in Edge Browser

When Microsoft Edge shows "DNS_PROBE_FINISHED_NXDOMAIN", it means the browser cannot reso...

Fix VSCode Git Authentication Failed on Windows

If you see "Authentication failed" when pushing or pulling in Visual Studio Code on Windo...

Chrome Certificate Error Invalid Authority: Diagnosis Checklist

When Chrome shows NET::ERR_CERT_AUTHORITY_INVALID and refuses to load a site, it...

Fix 'port already allocated' for Nginx in Docker Compose

You're starting your Docker Compose setup with Nginx, and you see "port is already alloca...

Fix 'port already allocated' Error in Docker Compose

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

Fix Nginx Upstream Connection Refused in Proxy Pass

When Nginx returns a 502 Bad Gateway or logs upstream connection refused


    Issue queue
Sitemap
Troubleshooting Nginx 502 in Docker Multi-Container Environments
How to Resolve VS Code Terminal Permission Denied
Troubleshoot Windows Defender Real-Time Protection Not Starting
Fix Cloudflare Wildcard Subdomain Issues
Fix No Internet After Network Reset Windows 11
Fix NET::ERR_CERT_AUTHORITY_INVALID by Clearing Chrome Certificate Cache
How to Resolve Cloudflare 522 on a New Server
Troubleshoot Windows 11 Bluetooth Discovery Issues
Troubleshoot Edge Preparing Sync Error
Docker Bind Mount Access Denied Troubleshooting
Resolve 'Remote Origin Already Exists' in Git Clone
How to Unstick Windows 11 Installation Assistant at 99%
Desk note

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