Leaving Alpha-Skip (Factory Reset)

If you have unenrolled from the Alpha or Alpha Skip Ahead, the console will be marked in the Microsoft database for unenrollment.

However, if the System wasn't factory reset, the Alpha/Skip Ahead Software is still installed.

You might have to download an
OSUDT to an USB stick and do a factory reset with a fresh system install from USB.

Klick on the link above and follow the instructions for updating your console offline (the tile on the right).

Hi

Consoles that are in the Alpha Skip Ahead tier of the Xbox Insider programs had to be factory reset to resolve an issue with the operating system on the console as per the notes below.

https://news.xbox.com/en-us/2018/07/08/new-preview-alpha-skip-ahead-1810-system-update-7-8-18/

Yes. There was an issue with an update in the Skip Ahead program that could only be fixed with a factory reset. https://news.xbox.com/en-us/2018/07/08/new-preview-alpha-skip-ahead-1810-system-update-7-8-18/

An automatic factory reset is a known result of the last Alpha Skip Ahead update if you are in the insider program. If you are please visit the insider subreddit to provide feedback there reddit.com/r/xboxinsiders

There is only a limited number of free slots in Alpha/Alpha Skip Ahead.

If someone in Alpha/Alpha Skip Ahead leaves, or is removed due to inactivity, participants in Beta are invited to Alpha. However, Beta participant invitations are sent out to those, that leave valuable feedback, find bugs, and are most active in the beta
group.

So it's not how long you are in the program, but how valuable your input and bug reporting was in the past.

Added to the fact that invitations are only sent out if there is new room in Alpha, you might have to wait a while to get invited. Just provide good feedback and be patient.