Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Cloudflare Error 521: Web Server Down Checklist

Cloudflare error 521 means your origin web server refused the connection. This is not a Cloudflar...

Fix VSCode Git Authentication Failed on Windows

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

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

Fix Windows Defender Real-Time Protection Not Running
You open Windows Security and see a yellow warning: "Real-time protection is off." Or you...

How to Fix Git index.lock File Exists Error on Mac
If you're working with Git on a Mac and see the error fatal: Unable to create '/pat...

Fix Windows Update Error 0x80070002: Missing File
If you see error 0x80070002 when running Windows Update, it usually means the system cannot find ...


    Issue queue
Sitemap
Malware Causing Firefox Secure Connection Errors
Chrome Extensions Not Loading: Common Causes and Fixes
How to Stop Windows 11 Update Rollback After Blue Screen
Troubleshooting pnpm Workspace Configuration
Troubleshooting Out of Memory During npm Build
Git Push Rejected: Non-Fast-Forward Solution
Windows 11 Update Not Moving Past 0%? Try This
Nginx Permission Denied Troubleshooting Ubuntu
How to Fix npm run build After npm install
Black Screen in Chrome After Turning Off Hardware Acceleration
Using Git LFS Migrate on an Existing Repository
Mac Chrome NET::ERR_CERT_AUTHORITY_INVALID Solution
Desk note

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