Well basically here's the deal. I have an Ubisoft/Uplay account, and when i start multiplayer up, it prompts me for my username and password. AND i entered my uplay account username and password and it told me that the sign in failed, and verify my installation or internet connection. Im sure my internet work fine, and is the problem originating from my uplay account or my installation? (I think my installation is okay since im halfway through the single-player) How can i fix this?