how to fix Nbak23 4b538e50 error code? it come on after trying to connect to online

Hi Victor. Sorry to hear about that issue. Let's see what we can do about that.

What exactly is your Xbox console generation/model? Does the issue only occur to that game, how about the others?

First, delete the local save:

Press the Xbox button to open the guide and then select My games & apps > See all > Games.
Highlight the game title, and then press the Menu button on your controller.
Select Manage game and add-ons > Saved data.
Select Delete all to remove the local save of this game, then follow the prompts.

After you delete the local save, restart your Xbox:
Press and hold the Xbox button in the centre of your controller.

Select Restart console, then follow the prompts.
After you restart your Xbox, re-sync your saved games to the cloud. Your saved games are automatically stored in the cloud while you're connected to the Xbox service.

Try playing the game again to see if re-syncing with the cloud corrected the game problem.

I am trying to play online, wont let me errors. my player I spent 9 days on wont load with my money. the servers wont let me on errors. iv tried. its on there end. very disappointed. please fix it. loading in error efeab30c. try to connect and error 4b538e50

Did you tried to read this article: https://support.2k.com/hc/en-us/articles/228672947-NBA-2K17-Error-message-EFEAB30C-or-4B538E50 ? And tried their suggestions to try fixing the error?

Error 4b538e5O no Connect but my connect is good

Per NBA2K the error is from not having the latest updates downloaded.

More information for that specific code can be found
here.

Im having the same sort of issue, im trying to access nba2k20 and every time i go to connect to server ot tells me that there is a problem connecting to the 2k server and error code 4b538e50, checked status on 2k clean, i have done multiple hard resets and uninstalled and re installed the game and it still continues... What do i do