fatal: The current branch x has no upstream branch.
The local branch isn’t linked to a remote branch yet, so a bare git push doesn’t know where to go.
Seen on:
Git
Meaning
New branches need an upstream set on the first push.
Common causes
- First push of a new branch
- Branch created from a local commit rather than from a remote branch
⚡ Quick fix
- git push -u origin <branch>
- Or enable auto setup: git config --global push.autoSetupRemote true
Detailed fix by platform
Git
git config --global push.autoSetupRemote true
How to diagnose
- Tracking — git branch -vv
- Recent change — Did it start after a deploy, upgrade, or configuration change? Compare with the last working version.
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Last updated 2 Oct 2026