Xbox One S System Update And Startup Error

Usually, this error occur upon startup or during OS updates. Basically, this error message indicate there is an issue with your Xbox One S system update process. To fix the E102 error, you need to update your console
offline.

In the link below you will find the neccessary steps to do to fix this error.

https://support.xbox.com/en-US/xbox-one/console/system-updates-solution

Troubleshoot startup errors on Xbox One

Hey Horse Feather!

The
System Update Troubleshooter has steps that can help - from the first page, select "I need to troubleshoot a system update error", then select which Xbox One model you're using (original, S, or X), and then select the "I am experiencing a startup issue"
option.

Give that a shot, and let us know if you see any improvement!

The scenarios described are stuck on green Xbox startup animation, or no green startup animation where my issue is green startup animation transitioning to black screen.

Hello Skronkles,

Thank you for your post. I understand you are experiencing an issue with your Xbox One S randomly powering off and freezing. To troubleshoot this, please visit this article:

Troubleshoot Startup Xbox One.

I hope this helps!

Hey Horse Feather!

The
System Update Troubleshooter has steps that can help - from the first page, select "I need to troubleshoot a system update error", then select which Xbox One model you're using (original, S, or X), and then select the "I am experiencing a startup issue"
option.

Give that a shot, and let us know if you see any improvement!

The scenarios described are stuck on green Xbox startup animation, or no green startup animation where my issue is green startup animation transitioning to black screen.

and it won't let me do an offline update anyway lol, happy days.