After attempting to save changes within the Account > Security settings in Admin Center, I receive the error: Failed to save security settings.
This error indicates a network issue within your browser. The error can be resolved by clearing your browser cache and cookies and restarting the process in an incognito window. For more details on clearing your browser cache, see the article: How to clear cache and cookies.
If the security error is accompanied by an additional error, for example, Enter a valid certificate fingerprint, it can be resolved by troubleshooting the specific error.
For more information on SSO configuration, see the article: Enabling SAML single sign on.
For more information on the security settings in Zendesk, see the article: Managing security settings in Admin Center.