Affected: Azure Active Directory SSO
Once you have completed integrating LaunchDarkly with Azure AD for SSO, only members who were added to the LaunchDarkly account before SSO was enabled are able to sign in. New members that attempt to sign in via SSO, are directed to app.launchdarkly.com and are prompted for a password.
The most likely cause of this issue is when the Sign on URL field under the Azure Basic SAML Configuration is filled out.
Leave the Sign on URL field blank. Otherwise, new members will not be able to initiate the login from the IDP.