GitHub Copilot Cloud Agent Access Denied Error (403)

What this error means

remote: Write access to repository not granted. fatal: unable to access 'https://github.com/...': The requested URL returned error: 403 is a GitHub Copilot failure pattern reported for developers trying to fix copilot cloud agent failing to push code with access denied / 403 errors. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Open GitHub issue (2026-04-30) reports Copilot Cloud Agent gets intermittent ‘Write access to repository not granted’ 403 errors even after successful pushes in the same session. Both git push and GitHub API routes fail with permission errors.

Common causes

• Copilot Cloud Agent is a paid GitHub feature. When it gets intermittent 403 access denied errors during code pushes, developers lose productivity and need immediate fixes for repository permission issues.
• Open GitHub issue (2026-04-30) reports Copilot Cloud Agent gets intermittent ‘Write access to repository not granted’ 403 errors even after successful pushes in the same session. Both git push and GitHub API routes fail with permission errors.

Quick fixes

1. Confirm the exact error signature matches remote: Write access to repository not granted. fatal: unable to access 'https://github.com/...': The requested URL returned error: 403.
2. Check the GitHub Copilot account, local tool state, and provider configuration involved in the failing workflow.
3. Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

• Verify the command, editor, extension, or API client that produced the error.
• Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
• Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

1. Capture the exact error message and the command, editor action, or request that triggered it.
2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
3. Review the source evidence below and compare it with your environment.
4. Apply one change at a time and rerun the smallest failing action.
5. Keep the working fix documented for the team or deployment environment.

How to prevent it

• Keep provider/tool configuration documented.
• Record non-secret diagnostics such as tool version, provider name, model name, and command path.
• Add a lightweight check before CI or production workflows depend on the tool.

Sources checked

• https://github.com/github/copilot-cli/issues/3041

Evidence note: Open GitHub issue (2026-04-30) reports Copilot Cloud Agent gets intermittent ‘Write access to repository not granted’ 403 errors even after successful pushes in the same session. Both git push and GitHub API routes fail with permission errors.

Related errors

• GitHub Copilot agent authentication token expired
• GITHUB_TOKEN insufficient write permissions for Copilot agent

FAQ

What should I check first?

Start with the exact remote: Write access to repository not granted. fatal: unable to access 'https://github.com/...': The requested URL returned error: 403 text and the smallest action that reproduces it.

Can I ignore this error?

No. Treat it as a failed GitHub Copilot workflow until the root cause is understood.

Is this guaranteed to have one fix?

No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.

How do I know the fix worked?

Rerun the same command, editor action, or request. The fix is working when that action completes without remote: Write access to repository not granted. fatal: unable to access 'https://github.com/...': The requested URL returned error: 403.