If your enterprise uses Enterprise Managed Users, GitHub Enterprise Cloud normalizes an identifier provided by your identity provider (IdP) to create each person's username on GitHub. If multiple accounts are normalized into the same GitHub username, a username conflict occurs, and only the first user account is created. For more information, see "Username considerations for external authentication."
If you're experiencing problems while switching between different authentication configurations, such as changing your SAML SSO configuration from an organization to an enterprise account or migrating from SAML to OIDC for Enterprise Managed Users, ensure you're following our best practices for the change.
- "Switching your SAML configuration from an organization to an enterprise account"
- "Migrating from SAML to OIDC"
When a configuration error or an issue with your identity provider IdP prevents you from using SSO, you can use a recovery code to access your enterprise. For more information, see "Accessing your enterprise account if your identity provider is unavailable."
If users are experiencing errors when attempting to authenticate with SAML, see "Troubleshooting SAML authentication."