Get-ExchangeCertificate -ServerName in Exchange 2010

I just updated the transport certificate on Exchange Server 2010. I have 2 Exchange servers and noticed this error message when going into the Server Configuration:

“The Exchange Certificate operation has failed with an exception. The error message is: Access is denied. It was running the command ‘Get-ExchangeCertificate -Server ‘Name'”

Does anyone have an idea why I would be getting this? I am not really good with Exchange Administration but learning.

TIA