What do you mean by offline?
The Connector does not need an Internet connection to world wide web, but it requires the administration port to be available in addition to port 5450 towards the PI Data Archive and 5457 towards Asset Framework (AF) Server. Please review the security section in the User Guide
Also, what errors are you seeing on the Overview Admin Page?
Thanks for your reply
None of the buttons on the screen do anything, when i try to add a data source and click add nothing happens
It does not populate with any sort of box to add a server to the list either
What browser are you using?
If you are using Internet Explorer, the symptoms would look like Enhanced Security is enabled. Please try a different browser (ie. Chrome) or whitelist the site / disable IE enchanced security.