Forum Discussion
Mixed Exchange Server ECP portal not accessible
Thank you for your reply with detailed information.
Since the issue does not occur when the Exchange 2013 servers are online,
compare the configurations of the virtual directories and authentication settings between Exchange 2013 and Exchange 2016.
Get-EcpVirtualDirectory | fl Server,InternalUrl,ExternalUrl,InternalAuthenticationMethods,ExternalAuthenticationMethods
Get-OwaVirtualDirectory | fl Server,InternalUrl,ExternalUrl,InternalAuthenticationMethods,ExternalAuthenticationMethods
Get-ClientAccessService | fl Name,AutodiscoverServiceInternalUri,AlternateServiceAccountCredential
Get-ExchangeCertificate | fl Thumbprint,CertificateDomains,IsSelfSigned,Services,Subject,NotAfter
Ensure that redirection settings in IIS for the ECP and OWA virtual directories do not inadvertently cause issues.
Your detailed reply was very helpful in my review.
The following servers are using self-signed certificates:VOH-SOU-VM-EX1
VOH-SOU-VM-EX6[Action Item]
Ensure that all Exchange servers use the same publicly trusted SSL certificate.
In the IIS Manager Console, unify the SSL binding settings for “Default Webs Site” and “Exchange Back End” with a public certificate!