Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix VSCode Git Authentication Failed on Windows

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

Fix 'nginx configuration test failed invalid parameter'

When running nginx -t to test configuration, seeing "nginx: [emerg] inva...

Git Merge --allow-unrelated-histories: When and How to Use It
You run git merge and get an error: fatal: refusing to merge unrelated histories...

Fix DNS Probe Finished NXDOMAIN After Changing DNS
After updating your DNS settings—perhaps to use Google Public DNS or Cloudflare—you might see the...

Fix Missing Taskbar Icons in Windows Notification Area
You look down at the notification area (system tray) and an icon you rely on—like volume, network...

How to Fix Nginx Upstream Connection Refused on Port 80
When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

Issue queue
Sitemap
Fix Windows Update Service Not Running in Event Viewer
Cloudflare 521 Error: How to Fix Server Timeout
Windows 11 Assistant Stuck at 99%: Reset and Finish
How to Fix Python venv Permission Denied on Activate
Resolve 0x80070002: Reset Update Components Step by Step
Fix Cloudflare 522 Error from Plugin Conflicts
Chrome Profile Sync Not Working After Update: Fixes
Fix Internet Problems by Flushing DNS on Windows 11
How to Unfreeze Windows 11 Installation Assistant
How to Fix Windows Update Error 0x800f081f Using Clean Boot
Windows Update 0x80070002 Troubleshooting Guide
Troubleshoot Windows 11 Install Assistant 99% Hang
Desk note

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