Am logging into a customer's VPN using anyconnect version 4.9.05042
The VPN is configured to authenticate / authorize using Office 365 / Azure AD.
Anyconnect keeps picking up some saved / cached Office 365 credentials from my machine but they are the wrong ones so the customer's VPN server keeps rejecting me (see below)

I am not signed into the actual Windows desktop using these creds.
How can I prevent anyconnect from picking these wrong creds?