How does Xbox exit the preview system?

Hello Fellow Gamer

Thank you for taking the time to post this on the Xbox Forums. We understand that you are currently inquiring about how to unenroll from the Xbox One Update Preview.

This is depicted in the
Xbox Insider Program FAQ. This can be done by following these simple steps:

1. Launch the Xbox Insider Hub on the device you used to join the playtest or preview.
2. On the main landing page, select Insider content.
   
3. Under System, select Xbox One Update Preview.
   
4. Select Join or Manage.
5. At the very bottom, select Unenroll.
   

I hope this helps!

A Conversation between me and one of the Xbox chat operators

Operator: There were a lot of exiting news on this year's E3 especially for Xbox one, anyway I checked your account it says here that you already accepted the preview program agreement

Operator: so let us check if you can just redownload the dashboard in the Xbox Store

Me: And how do I do that does it have specific name?

Operator: Let's search for it on the console using the keywords "preview program" or preview dashboard



He said i was already accepted into the preview program yet I can not find it on the console

anyone read this? anyone have any ideas on how I can 1- get access to the preview forums

2- get my system off the green screen

3- opt out of the preview program so that this does not happen again

4- or get xbox to replace my console because they broke it?

Ok so console A has the preview program installed on it which is your parent. And console B is yours which does not have the preview app installed on it. And the parent has invited you to the preview program? If so how long have you waited for your system
message to come through? Has your parent tried to invite you more than once?

Also note that not everyone is selected for the preview program. No where does it say what the requirements are, but there is a chance your account does not fulfill a requirement to use this.

Hi,

being invited to the preview program does not guarantee selection. And bear in mind that they do invites in batches/waves due to volume of people trying to join.

How will you know if you are selected?

You'll get a service message from the team on your Xbox One. The message will include a link to download the Xbox Preview Dashboard app. You'll need to use the app to register your console for Preview updates.

There is more info available on the official FAQ
here