Cisco Anyconnect issue after migrating to new MX

[MFG]

After migrating from my Cisco to the Meraki MX, some of my Cisco AnyConnect clients are displaying the error 

VPN: No valid certificates available for authentications.  

Not all clients get this error.  The OS is Windows 11.  and it doesnt matter which version of the client. 

[thaack]

Are you utilizing Certificate authentication?

If so - where is it pointing in the AnyConnect profile xml?

[MFG]

I have never done any additional configuration outside of installing the default options for the AnyConnect client so I don't think so.  How would I check if that is a setting?