Fix Git 'index.lock file exists' Error
When you see the error fatal: Unable to create 'path/.git/index.lock': File exists....
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Merge a Git Detached HEAD Back to Master
If you see a message like 'You are in 'detached HEAD' state' after checking out a...
Cloudflare 522 Error After Server Migration: Fixes That Work
If you've just migrated your website to a new server and now see a Cloudflare 522 error (conn...
Fix Nginx HTTP to HTTPS Redirect Loop Error
You set up an HTTP-to-HTTPS redirect in nginx, but now your browser shows a redirect loop error. ...
Fix Windows Search Indexing High CPU Usage
If your computer's fan spins up and Task Manager shows Windows Search using a lot of CPU, the...
Fix Windows Security App Permission Issues
You open Windows Security and see a message like "This app has been blocked for your protecti...
Issue queue
SitemapTroubleshooting DNS_PROBE_FINISHED_NXDOMAIN Error on WiFi
Update Git Remote URL with set-url origin
Python Permission Denied When Installing Virtualenv
Cloudflare 521 Origin Unreachable Fix
Fix Windows Search Indexing Not Working After Upgrade
Docker Nginx Volume Permission Denied Fix
Fix Bluetooth Not Showing in Device Manager on Windows 11
Troubleshoot Docker Compose .env File Issues
Fix Python UnicodeDecodeError on Windows: Common Causes & Solutions
How to Fix DNS Probe Finished NXDOMAIN After Windows Update
How to Reset Proxy Settings in Windows 11
How to Resolve Chrome Black Screen When Hardware Acceleration Is Off
Update Git Remote URL with set-url origin
Python Permission Denied When Installing Virtualenv
Cloudflare 521 Origin Unreachable Fix
Fix Windows Search Indexing Not Working After Upgrade
Docker Nginx Volume Permission Denied Fix
Fix Bluetooth Not Showing in Device Manager on Windows 11
Troubleshoot Docker Compose .env File Issues
Fix Python UnicodeDecodeError on Windows: Common Causes & Solutions
How to Fix DNS Probe Finished NXDOMAIN After Windows Update
How to Reset Proxy Settings in Windows 11
How to Resolve Chrome Black Screen When Hardware Acceleration Is Off