Before a browser test can run the domain it's running on must first by permitted by MCS.
Click the General Config option from the Administration panel in the MCS main menu.
Scroll down to the permitted domain section and enter a domain. For example, if visualware.com is entered, any test running on that domain will be permitted, including sub-domains. Do not include the protocol (http/https) when adding a permitted domain.
Also note the permitted domain limit (shown as 50 below). Domains added that go beyond this limit will be ignored.
To finish click the Submit Changes button at the bottom of the page.