Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix Nginx Upstream Connection Refused & Upstream Not Found

When you see upstream connection refused or upstream not found in your ...

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Fix Node Sass Build Failed: Sass Not Found

When running a Node.js project that uses Node Sass, you might encounter a build error like ...

Fix 'Windows Cannot Access Shared Folder' Credential Errors
When you try to open a shared folder from another computer and see 'Windows cannot access'...

VS Code Git Changes Not Detected After Save: Fixes
You save a file in VS Code, but the Source Control panel shows no changes. The file doesn't a...

Fix Chrome Certificate Error: Invalid Authority Registry on Windows
When browsing in Chrome, you may encounter a certificate error stating “invalid authority...


    Issue queue
Sitemap
Quick Fix for ERR_NAME_NOT_RESOLVED in Chrome
Cloudflare 521 Error: Port 443 Blocked Fixes
How to Set Git Bash as Default Terminal in VSCode
Fix Windows Security App Not Starting on Windows 11
Windows Explorer Keeps Restarting Fix
Git LFS Track Command Guide
Resolving 'index.lock File Exists' in Git
Fix Docker Compose Port Already Allocated Error
Troubleshooting npm package.json Not Found Error on Linux
Resolve NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode
Git Stash and Merge Conflict Troubleshooting
Resolving Permission Error 0x80070005 in Windows Update
Desk note

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