The resolution to this one is to verify the URL. Previously on VCAC 6.01, We used the rewrite rules in Apache to redirect https://VCACHOST/shell-ui-app/org/myorg to http://provisioning. In VCAC 6.1, the URL for the tenant changes to: https://VCACHOST/vcac When upgrading from 6.01 to 6.1 I update the rewrite rule to redirect to https://VCACHOST/vcac (which worked for existing VCAC users previous to the 6.1 upgrade) after talking to Support, I changed the redirected URL to https://VCACHOST/vcac/org/tenant and all browsers worked. I am not sure why existing users were redirected to my org tenant and new users were redirected to the default tenant, but in the end that was the issue.
