Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

Fix Chrome Certificate Error: Invalid Authority Registry on Windows

When browsing in Chrome, you may encounter a certificate error stating “invalid authority...

Git Push Rejected Non Fast Forward: How to Fix
You run git push and see: ! [rejected] main -> main (non-fast-forward)

Windows Update Service Setup Guide: Enable & Configure When Windows Update fails, the underlying service is often the culprit. This guide walks through ...

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...

How to Fix Firefox Secure Connection Failed with VPN You're using a VPN and Firefox suddenly shows 'Secure Connection Failed' on sites tha...

Fix VSCode Save File Permission Denied Error You try to save a file in Visual Studio Code and see 'Permission denied'. The file might ...

Issue queue Sitemap Resolve Git Fatal Refusing to Merge Unrelated Histories Fix Windows 11 Update Stuck at 0% with Troubleshooter How to Restore Missing Taskbar Icons in Windows Windows 11 Upgrade Stuck at 99%? Here's the Fix How to Fix Node Sass Build Failure After npm Cache Clean VS Code Update Killed My Terminal – Troubleshooting Guide How to Configure Wildcard DNS in Cloudflare Fix Git SSL Certificate Verify Failed: Unable to Get Local Issuer Troubleshoot Firefox VPN Certificate Error Mac Edge Sync Setup: Turning On and Troubleshooting How to Fix npm Global Install Permission Error DNS Probe Finished NXDOMAIN: Troubleshooting Checklist Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities