How do I unenrolled from the Minecraft 1.16 Beta?

Were you involved in the beta test for 1.16 if you were that might be it, if so unenroll from the beta and uninstall and reinstall and you should be good (this happened to me multiple times)

If you're enrolled in the Minecraft beta you need to unenroll from the same (you can unenroll from the Xbox insider app)

If you are enrolled in the beta, you have likely been “updated” to the beta. Betas do not have access to Realms.

If you wish to unenroll from the beta and reinstall the normal version you can do so via the Xbox Insider Hub.

1. Xbox Insider Hub → Insider Content → Minecraft → Manage → Unenroll
2. Uninstall Minecraft
3. Wait for the system to process the unenrollment (approx. 20 minutes, up to several hours)
   
4. Download & reinstall Minecraft

If the beta continues to download after unenrolling, you may need to allow additional time for the system to process the unenrollment. You may also
power cycle the console before attempting to reinstall the game.

I do not have any other accounts with it installed, I have not unenrolled from the insider program itself but I have unenrolled from the Minecraft beta, I tried to uninstall the Xbox insider app and reinstall it that does not work though. whenever I try
to uninstall Minecraft and reinstall it it only downloads 3 or 4 MB of data then I open it and I still have the beta.

Hello Camellachee,

Thank you for posting here on the Xbox forums. Are one of you guys enrolled in the Minecraft Beta? The outdated client issues means that either one of you guys is not fully updated in Minecraft, or one of you are in the Minecraft Beta. To unenroll from the
beta, you would launch the Xbox insider hub to navigate to Minecraft from there and then select unenroll or "Leave this preview."

For more information on this minecraft error code, please visit
Minecraft support.