Powershell not prompting MFA when connecting to Vcenter

I currently have MFA working on the Vcenter 6.5 GUI using and LDAP proxy. But I cannot get powershell to force MFA using the connect-viserver command. It ask for my credentials and just logs me in. Of course when I log into the GUI URL it forces the Push Notification. Am I missing a force powershell SSH entry on my DUO LDAP proxy? Any suggestions would help. Thank you.