OpenVPN does not block anything, however, it does rely on routing and gateways. When default gateways and routing is changed on your PC to allow access to the university server it is very possible that you will not have access to other internet services like Steam.
amdga wroteIts connected to the university network
As you cannot post the server config I suggest you ask the IT staff at the university about this problem. It is very likely that the university server is configuring your client to use their network and they have total control of what you can access once you connect.
There is nothing you can do about this .. if you post your client config and log file we may be able to confirm what is stopping you accessing other internet services.
