Restart Steam, launch NBA 2K again and check if you can download the latest game updates. Then locate and delete the SYNC.BIN file. Navigate to Program Files\Steam\userdata\\1644960\local. Clear some room on your drive and try again.
Restart your router and disconnect all the devices that are using the same network to free up more bandwidth for NBA 2K. Make sure your network connection is stable. Fix NBA 2K won’t download game update on PC Check your connection and disable security software Follow the troubleshooting steps below to get rid of this issue. But sometimes, the Downloading game updates screen gets stuck at 0 percent. NBA 2K automatically searches for game updates.