Cache Credentials

I don't know if that's exactly the right term. But with Kerberos of OpenID authentication, laptops and machines usually have the ability to cache credentials. Right now, every time I open a Canary Excel Add-In workbook, it takes me to my browser. People coming from other applications where they are never asked to log in (due to Kerberos being automatic), have a hard time with this.

I could just be lazy, but, I'd like to hear other's feedback. Or ways they made it simpler for users.