I’m building an online store right now and I currently own a Comodo InstantSSL certificate. I’m in the process of setting up Google Checkout services using X-Cart cart e-commerce software and am receiving a 401 authentication error. I wanted to verify that Comodo’s InstantSSL certificate is accepted by Google Checkout. Any help or thoughts on this would be greatly appreciated!
Google Checkout updated the version of java used around Sept 2006, which then included our roots.
So, InstantSSL certificates are supported.
I would recommend you contact Google Checkout for a resolution to a 401 error.