Cant leave Minecraft Windows 10 beta program even though i'm not in it.

Hello HenriB04,

Thank you for posting on the Xbox forums. We will be locking this thread due to it being revived by a new post. If there are any questions, discussions or issues that anyone would like to bring to our attention, please create a new thread. We will be
more than happy to answer any questions or provide solutions for any issues. Thank you again and happy gaming
HenriB04!

What OS build are you on? Hit the Windows key, type winver, hit Enter.

Or Windows key+r, winver, OK

I can't get into the beta..

You are in a build that is in the Windows Insider Slow ring. This is a beta build not yet released to the public.

Opting into and out of beta:

1. Xbox One and Windows 10 players can opt in and out of the beta from the Xbox Insider Hub app. Please be aware that opting in and out of the beta may affect all user accounts on a shared device*.
2. Android players can opt in and out from the Minecraft page of the Google Play Store.
3. Please bear in mind that un-enrolling from the Minecraft Beta can sometimes take up to 24 hours
   

Source: https://feedback.minecraft.net/hc/e...8671-How-to-Join-and-leave-the-Minecraft-Beta

Edit:

There are more detailed instructions at this link: https://news.xbox.com/en-us/2018/07/09/minecraft-beta-guide-and-faqs/