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prashanthpurushotham's avatar
prashanthpurushotham
MCT
Jul 06, 2024

Mixed Exchange Server ECP portal not accessible

We have 4 servers, 2 exchange 2013 servers and 2 exchange 2016 servers, if all the servers are on ECP porta is accessible, but if we turn off 2 exchange 2013 servers, then ECP portal is not accessibl...
Exchange Server
      • AnnTaeYoun's avatar
        AnnTaeYoun
        MVP
        Jul 08, 2024

        prashanthpurushotham 

        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.