This is crazy but in my vast experience of clearing the reserve data in order to play NBA2k17. the next time I hop on I have been unable to sync which ultimately lead me to be unable to connect and get that error code. I found that by going to the credits and watching the credits until a box in the bottom left corner pops up saying "update required return to main menu". at that point ive been able to go back to the main screen and all of my information was still there and it would load up.
like the kid above said hopefully you didn't delete your profiles because I think you might be beat if you did that