Hello, first time using QB. I am trying to connect my bank account but everytime i try it opens my banking app and gives an error message OBA28.

Hello Pa88andrew-gmai, 

Welcome to the Community page, 

Can we ask what bank account and type of account are you trying to connect in Quickbooks?

Also, are you trying to connect it through the Quickbooks app or on the web browser, and which browser are you in?