Fixing Nginx Upstream Connection Refused on Port 443
You see "upstream connection refused" in your Nginx error log when proxying requests to p...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesBluetooth Not Working After Windows 11 Update? Try These Fixes
After a Windows 11 update, you might find Bluetooth missing, devices not pairing, or intermittent...
Fix Windows 11 Blue Screen After Memory Diagnostic
You ran Windows Memory Diagnostic after a blue screen, and now you're stuck in a loop or seei...
How to Fix Limited Connectivity on Windows 11 Wi-Fi
You connect to Wi-Fi but see "Limited connectivity" or "No internet, secured." Yo...
Git Push Rejected Non Fast Forward: Troubleshooting Checklist
If you see ! [rejected] main -> main (non-fast-forward) when running
Fix VS Code Source Control Not Detecting Changes with Permission Denied
You open VS Code, make edits, but the Source Control panel shows no changes. Or you see a "pe...
Issue queue
SitemapWindows 11 Python Command Not Found Guide
How to Recover More Space After Docker Prune
Slow IntelliSense in VSCode – Troubleshooting Guide
Taskbar Icons Disappeared? Quick Recovery Steps
Fix Secure Connection Failed in Firefox
Edge Sync Option Disappeared Fix
How to Fix Python Memory Errors When Reading Large CSV Files
How to Fix Bluetooth Device Pairing Issues in Windows 11
Troubleshooting Python Venv Activation Error
Fix Windows 11 Upgrade Stalling at 99%
Resolve Windows Update 0x80070002 Network Error
How to Resolve Windows 11 Error 0x800f081f
How to Recover More Space After Docker Prune
Slow IntelliSense in VSCode – Troubleshooting Guide
Taskbar Icons Disappeared? Quick Recovery Steps
Fix Secure Connection Failed in Firefox
Edge Sync Option Disappeared Fix
How to Fix Python Memory Errors When Reading Large CSV Files
How to Fix Bluetooth Device Pairing Issues in Windows 11
Troubleshooting Python Venv Activation Error
Fix Windows 11 Upgrade Stalling at 99%
Resolve Windows Update 0x80070002 Network Error
How to Resolve Windows 11 Error 0x800f081f