When attempting to log in to the Application Server, an error is thrown. The following message is present in the logs:
[System.Security.Cryptography.CryptographicException] Key not valid for use in specified state.
There are two known root causes at this time.
Ensure that when the Certificate was imported onto the Web Server, the option "Mark this key as Exportable" was selected.
Grant the necessary rights to the application pool using the Certificates snap-in under the Microsoft Management Console.
If the "Certificates (Local Computer)" option is not present in MMC, follow these steps to add it: