Blizzard... oh Blizz. Regardless on how much money you get paid, it is kinda lame that you cant even sort out stuff on your side, fix whats needed and smooth your users experience when it comes to bugs. But since this is not a letter for them, lets get started. You are reading this cause... Your "PLAY" button is disabled for any Blizz game thanks to a "update being applied". At the top left corner of your BNet launcher (right below the Bnet logo) you should see an empty micro progress bar... thats where the party is happening at. Click on the Bnet logo there and youll get your prompted menu... where at its bottom you will see the status of the tricky update at 0%. See, Bnet launcher for some reason has issues lately when it comes to updates, and thanks to that no game can be played before the launcher upadte, it gets messy since the damn progress bar is so small and empty that you dont even get what is updating and such or worse... how to fix it, you close and reope...