Feedback from a client: We were able to get it to work. We had to url encode the @ symbol in the email address. Example bower install https://firstname.lasname%40walmart.com@bower.telerik.com/bower-kendo-ui.git Once this was done it worked. It might be a good idea to update this in the on-line documentation
Thanks for the feedback. We've pushed this in the relevant help article (http://docs.telerik.com/kendo-ui/install/bower, troubleshooting section), and it will go live with the next update of the docs.