Software troubleshooting desk

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

Symptom

Cause

Fix route

Verify

Fresh repair notes

All notes

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...

DNS Probe Finished NXDOMAIN: Fix When ipconfig /flushdns Fails
You're browsing normally and suddenly Chrome shows "DNS_PROBE_FINISHED_NXDOMAIN". You...

Fix Git 'index.lock file exists' Error
If you see fatal: Unable to create 'path/.git/index.lock': File exists. when...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer
If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

How to Create a New Branch from a Detached HEAD in Git If you see a message like "You are in 'detached HEAD' state" in Git, it means you...

Fix Windows Defender Real-Time Protection Stuck Off in Windows 11 You open Windows Security, see real-time protection is off, click the toggle, and it turns back o...

Issue queue Sitemap How to Use a Cloudflare DNS Propagation Checker Tool Chrome Update Broke Sync: Troubleshooting Steps Troubleshooting Bluetooth Error 0x00000001 in Windows 11 How to Fix PermissionError with pip Install How to Fix Chrome DNS Error from Antivirus Blocking Fix Chrome Extensions Not Loading on Windows 10 Install Cloudflare SSL Certificate on Nginx Fix Git 'index.lock' File Exists Error in SourceTree How to Fix Git Permission Denied in VSCode Troubleshoot WiFi Connected No Internet Windows 11 Fix 'git remote origin already exists' on Windows Fix DNS Probe Finished NXDOMAIN for a Specific Website Desk note Troubleshooting paths Home Windows FixesmacOS HelpBrowser IssuesOffice ToolsDeveloper ToolsCloud SoftwareSecurity ToolsBackup RecoveryNetwork ToolsDatabase ToolsAI ToolsProductivity AppsCLI ErrorsDocker KubernetesEmail ClientsFile Utilities