You do not have sufficient permissions to select this certificate for Secure Sockets Layer (SSL) encryption. To resolve this ...

You do not have sufficient permissions to select this certificate for Secure Sockets Layer (SSL) encryption. To resolve this issue, either obtain the appropriate permissions to select this certificate and then try again, or use TS Gateway Manager to select another certificate. For more information, see Obtain a Certificate for the TS Gateway Server in the TS Gateway Manager Help.