Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix 'Python Virtual Environment Activate Command Not Found'

When you try to activate a Python virtual environment with source venv/bin/activate ...

Fix VS Code Source Control Not Detecting File Modifications

You edit a file, save it, but the Source Control panel in VS Code shows nothing. No pending chang...

Fix VS Code 'Cannot Save File: Permission Denied' on Mac

You're editing a file in VS Code on your Mac, hit save, and get: 'Failed to save:...

How to Fix Nginx 'Upstream Connection Refused' Error
When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...

Windows Security App Not Working After Update: Fixes
After a Windows update, the Windows Security app may fail to open, show a blank window, or displa...

Grant Docker Registry Pull Access: Step-by-Step Guide
If you manage a private Docker registry, you often need to give certain users or CI systems the a...

Issue queue
Sitemap
Troubleshoot Error 0x80070002 in Windows Update
How to Fix ERR_NAME_NOT_RESOLVED in Chrome
Cherry-Pick Conflicts: Causes and Fixes
Add Python to PATH on Windows 10 When 'Command Not Found'
Resolve Error 0x80070005 in Windows Update
Bitbucket Git Remote Origin Conflict Solution
VS Code Terminal Permission Denied: Quick Fixes
Removing Large Files from Git History
Nginx Upstream Connection Refused in Docker: How to Fix
How to Fix Windows 11 Update Stuck at 99%
Troubleshooting Docker Build Context Canceled
Python Open File Encoding Error: Quick Fix
Desk note

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