The next button is disabled on IFD configuration wizard.
Recently we experienced an interesting issue while trying to configure Internet-facing deployment using the Configure Internet-Facing Deployment Wizard on CRM Deployment Manager. After entering the domains for the specified Microsoft Dynamics CRM Server roles, we were on the page where we had to type the external domain but the Next button was disabled so we could not proceed on.
Cause: After running the SQL Profiler traces, we were able to find the root cause. For some reason, the NVarCharColumn value of ExternalRelyingPartyPassiveIdentifier in [MSCRM_CONFIG].[dbo].[FederationProviderProperties] was incorrect. Instead of the external domain URL, the value was uri:ifdMicrosoftCRM…
Solution: We did update the field value be to the external domain URL e.g. https://auth.contoso.com and the next button became enable Again.