Fix Git Push Rejected: Non-Fast-Forward Error - SourceTree Detached HEAD: How to Fix It-npm Permission Denied Error Checklist

Updated 2026-07-28 09:22:14developer-tools
Fix Git Push Rejected: Non-Fast-Forward Error - SourceTree Detached HEAD: How to Fix It-npm Permission Denied Error Checklist
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.