Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix git index.lock File Exists Error on Windows

If you see fatal: Unable to create 'index.lock': File exists. when running G...

Fix Windows 11 Installation Assistant Stuck at 99%

You're running the Windows 11 Installation Assistant, it reaches 99%, and then sits there. No...

Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking

You try to load a website and see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, or simi...

Fix npm run build Failure from Missing Env Variables

You run npm run build and get an error like Error: Missing required environmen...

Python Permission Denied After Upgrading pip: How to Fix
After upgrading pip, you might see errors like PermissionError: [Errno 13] Permission denie...

Fix 'python command not found' on Windows with Python Installed
You installed Python on Windows, but when you type python --version in Command Promp...


    Issue queue
Sitemap
Fix Windows Update Error 0x80070002 with System File Checker
Windows 11 Bluetooth Troubleshooting: 10 Fixes to Try
Resolve Python Memory Errors on Windows for Big Files
Check DNS Propagation with Cloudflare Tools
Understanding DNS Probe NXDOMAIN and Server Not Found
Fix BSOD After Memory Diagnostic on Windows 11
Python MemoryError Fix for Large File Processing
Fix Permission Denied When Saving in VS Code Mac
Reinstall Microsoft Defender Windows Security
Windows 10 Real-Time Protection Not Turning On? Try These Fixes
Windows 10 npm install Permission Fix
Firefox Not Loading Sites? Fix Secure Connection Failed
Desk note

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