Fixing Nginx Upstream Connection Refused and Permission Denied
If you see connect() failed (111: Connection refused) or connect() failed (13:...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix ERR_CERT_AUTHORITY_INVALID on Localhost
When testing a local web app, you may see ERR_CERT_AUTHORITY_INVALID in Chrome or si...
Fix Firefox Secure Connection Failed After Update
After a Firefox update, you might see a "Secure Connection Failed" error when visiting we...
Docker Pull Access Denied on Mac M1: Step-by-Step Fix
If you're running Docker on an Apple M1 Mac and see 'access denied' when pulling an i...
Fix Windows Cannot Access Shared Folder with Password Protected Sharing
You try to access a shared folder from another computer on your network and get an error: "Wi...
How to Use Chrome's Built-in Memory Cleanup Tool
If Chrome is eating up your system memory and slowing everything down, you don't need third-p...
Issue queue
SitemapHow to Enable Windows Defender Real-Time Protection in Windows 11
How to Fix npm Package Json Not Found Error
How to Stop Windows Explorer From Restarting After Crash
VS Code Windows Terminal Python PATH Error Fix
Fix Chrome ERR_CONNECTION_RESET: DNS Flush and More
Fix Cloudflare SSL Full Strict Mixed Content Warning
Recover Detached HEAD Commits and Merge to Master
Docker Compose Ports Not Binding: Troubleshooting Guide
Fix Windows 10 Cannot Access Shared Folder Error
How to Resolve Node Sass Build Failures
Fix 'Permission Denied' When Activating Python venv
Node.js Memory Limit: Permanent Configuration
How to Fix npm Package Json Not Found Error
How to Stop Windows Explorer From Restarting After Crash
VS Code Windows Terminal Python PATH Error Fix
Fix Chrome ERR_CONNECTION_RESET: DNS Flush and More
Fix Cloudflare SSL Full Strict Mixed Content Warning
Recover Detached HEAD Commits and Merge to Master
Docker Compose Ports Not Binding: Troubleshooting Guide
Fix Windows 10 Cannot Access Shared Folder Error
How to Resolve Node Sass Build Failures
Fix 'Permission Denied' When Activating Python venv
Node.js Memory Limit: Permanent Configuration