Git Push Rejected Non Fast Forward: Troubleshooting Checklist
If you see ! [rejected] main -> main (non-fast-forward) when running
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesGit LFS Configuration for Large Binary Files
When you add large binary files like images, videos, or compiled assets to a Git repository, the ...
Python Virtual Environment Not Activating After Install: Fixes
You installed a Python virtual environment with python -m venv myenv, but when you t...
Fix Cloudflare 522 Error with Nginx Configuration
You're seeing a Cloudflare 522 error: connection timed out between Cloudflare and your origin...
Fix Nginx Upstream Connection Refused in Docker
You have Nginx running, either on the host or in a container, proxying to another Docker containe...
How to Fix Limited Connectivity on Windows 11 Wi-Fi
You connect to Wi-Fi but see "Limited connectivity" or "No internet, secured." Yo...
Issue queue
SitemapResolving Git Clone Timeout on Unstable Networks
Stop Nginx Redirect Loop in Server Block
Resolving No Space Left on Device in Docker on macOS
Windows Remote Desktop Setup Checklist: 10 Steps to Connect
How to Resolve Git Clone Connection Timed Out
Resolve Node.js Version Errors During Package Installation
Node.js Heap Out of Memory During Tests
Resolving pip install Dependency Conflicts and Permission Errors
Stop File Explorer Crashing: Disable Shell Extensions
How to Solve Python Memory Errors with Large Files
Fix 'node sass build failed permission denied' Error
npm run build Fails: Missing Environment Variables Fix
Stop Nginx Redirect Loop in Server Block
Resolving No Space Left on Device in Docker on macOS
Windows Remote Desktop Setup Checklist: 10 Steps to Connect
How to Resolve Git Clone Connection Timed Out
Resolve Node.js Version Errors During Package Installation
Node.js Heap Out of Memory During Tests
Resolving pip install Dependency Conflicts and Permission Errors
Stop File Explorer Crashing: Disable Shell Extensions
How to Solve Python Memory Errors with Large Files
Fix 'node sass build failed permission denied' Error
npm run build Fails: Missing Environment Variables Fix