Claude Code with GitHub Enterprise Server changedgithub-enterprise-server
Nearest release: v2.1.312, published 23 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 28 Oct 2026 18:04 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 28 Oct 2026 18:07 UTC.
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### Connection test passes but a second test fails
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218218If reviews or Anthropic-hosted cloud sessions time out, your GHES instance may not be reachable from Anthropic infrastructure. Confirm your firewall allows inbound connections from Anthropic's [outbound IP addresses](https://platform.claude.com/docs/en/api/ip-addresses#outbound-ip-addresses). Sessions in a [self-hosted environment](https://code.claude.com/docs/en/self-hosted-environments) reach GHES from inside your network, so when one of them can't clone, check the runner's own network path instead. For the repository picker and other hosted pre-session flows, see [Network requirements](#network-requirements).
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220### Connection test passes but a second test fails
221
222The second test connects to your GHES instance the way Anthropic-hosted cloud sessions do. Find your message to see whether to check your firewall or try again:
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224* **`Connection test passed, but a second test failed.`**: if your instance is behind a firewall, allow all of Anthropic's [outbound IP addresses](https://platform.claude.com/docs/en/api/ip-addresses#outbound-ip-addresses), because a connection test can pass even when your firewall blocks some of them. You can also try again in a few minutes.
225* **`Connection test passed, but a second test could not run.`**: try again in a few minutes.
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227To test again, open the connection's **More options** menu in [**Organization settings > Git providers**](https://claude.ai/admin-settings/source-control#github-enterprise) and select **Test connection**.
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220229### Session start fails with `Unable to get organization UUID`
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222231Claude Code couldn't read a claude.ai organization from your credentials. Sign in with `/login` using an account in your Team or Enterprise organization, since GitHub Enterprise Server support is limited to those plans. See [Unable to get organization UUID](https://code.claude.com/docs/en/claude-code-on-the-web.md#unable-to-get-organization-uuid) for the causes and the other messages this state produces.
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