Fix ERR_CERT_AUTHORITY_INVALID on Localhost
When testing a local web app, you may see ERR_CERT_AUTHORITY_INVALID in Chrome or si...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Firefox Secure Connection Failed DNS Error
You try to visit a website in Firefox and see 'Secure Connection Failed' with an error li...
How to Reset Windows Defender Real-Time Protection
Windows Defender real-time protection can sometimes get stuck, fail to turn on, or stop respondin...
Fix Docker Network Missing After Reboot
After a system reboot, you may find that a Docker network you created is no longer listed when yo...
Fixing Nginx 502 Bad Gateway with Docker and Load Balancers
If you're running Nginx as a reverse proxy or load balancer in a Docker setup, a 502 Bad Gate...
Fix npm install Permission Denied on Shared Hosting
When you run npm install on a shared hosting server, you might see errors like
Issue queue
SitemapAvoid sudo pip: Fix Permission Denied in Python
How to Remove an Existing Git Remote Origin
Stop Nginx Redirect Loop: Step-by-Step Guide
How to Resolve Git Token Expired in VSCode
Nginx Upstream Connection Refused: Quick Fix
Fix Python Command Not Found on Windows
How to Fix ERR_CONNECTION_RESET When Firewall Blocks Chrome
Windows 11 Blue Screen After Update: How to Fix
Fix Python Virtual Environment Not Activating on Mac
Why VS Code Git Ignores New .gitignore Rules
Resolve BSOD After Windows 11 Update with Clean Boot
Docker Permission Denied Error When Mounting Volumes
How to Remove an Existing Git Remote Origin
Stop Nginx Redirect Loop: Step-by-Step Guide
How to Resolve Git Token Expired in VSCode
Nginx Upstream Connection Refused: Quick Fix
Fix Python Command Not Found on Windows
How to Fix ERR_CONNECTION_RESET When Firewall Blocks Chrome
Windows 11 Blue Screen After Update: How to Fix
Fix Python Virtual Environment Not Activating on Mac
Why VS Code Git Ignores New .gitignore Rules
Resolve BSOD After Windows 11 Update with Clean Boot
Docker Permission Denied Error When Mounting Volumes