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 notesFix Angular Breakpoints Not Hit in VS Code
You set a breakpoint in an Angular component or service, start debugging in VS Code, and the brea...
Windows 11 Update Stuck at 0%: Permission Denied Fix
If your Windows 11 update is stuck at 0% with a "permission denied" message, the installe...
Fix Nginx Config Test 'Permission Denied' Error
Running nginx -t and seeing 'permission denied' can stop you from reloading ...
Fix Cloudflare Origin Certificate with Let's Encrypt
If your origin server is rejecting the Cloudflare origin certificate—perhaps because of a SAN mis...
Fix Python venv 'No such file or directory' Error on Activation
You create a virtual environment with python -m venv myenv, then try to activate it ...
Issue queue
SitemapDocker Container Exits Immediately After Entrypoint
Fix Permission Denied Error When Using pip Install on Mac
How to Fix Cloudflare 522 Error from Plugin Conflicts
Troubleshooting 0x80070002 Windows Update Error
Git Merge Conflict Resolution Guide
Taskbar Icons Disappeared? Quick Fixes That Work
Install Python Packages Without Sudo
How to Resolve Nginx Configuration Test File Not Found Error
Windows Update Service Missing from Services.msc: Fixes
PyCharm Virtual Environment Not Activating? Try These Fixes
Fix 0x800704ec Real-Time Protection Error
VSCode Breakpoint Not Hit Due to Source Maps: Fix
Fix Permission Denied Error When Using pip Install on Mac
How to Fix Cloudflare 522 Error from Plugin Conflicts
Troubleshooting 0x80070002 Windows Update Error
Git Merge Conflict Resolution Guide
Taskbar Icons Disappeared? Quick Fixes That Work
Install Python Packages Without Sudo
How to Resolve Nginx Configuration Test File Not Found Error
Windows Update Service Missing from Services.msc: Fixes
PyCharm Virtual Environment Not Activating? Try These Fixes
Fix 0x800704ec Real-Time Protection Error
VSCode Breakpoint Not Hit Due to Source Maps: Fix