Exchange CU Installation Fail: Caused by SSL Cert.

By | January 11, 2022

Exchange Installation error 5506 is caused by the 3rd party certificates. To resolve this always change to the Microsoft cert before beginning the upgrading to the next CU.

IIS > Bindings > SSL Certificate > Microsoft Exchange

The error returned was 5506. at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError (Exception exception, ErrorCategory errorCategory, Object target, String helpUrl) at Microsoft.Exchange.Configuration.Tasks.Task.WriteError (Exception exception, ErrorCategory category, Object target) at Microsoft.Exchange.Management.SystemConfigurationTasks.InstallExchangeCertificate.EnableForServices (X509Certificate2 cert, AllowedServices services) a