Any help with the latest update to XBox One this week?

Would this be an Xbox Insider Preview build? If so, you should post for support here HTTPS://www.reddit.com/r/xboxinsiders

Have you power cycled your network router?

As Njal the Blue stated any Insider issues should be posted in the Reddit Insiders Forum link they provided. There you will see if others are having the same issue with
an Insider preview update and possible solutions or workaround.

Sorry,somehow I missed the part where you said you left the preview despite it being in huge letters lol.

This is from the preview forums:

Hey everyone,

We've received reports from users that games purchased on their latest Xbox One update Preview console will not launch or install on other Xbox One consoles, or on their console after it has been un-enrolled from Preview.

This behavior is called out in the known issues for the latest Xbox One update:

Thanks for helping us test the latest Xbox One update! We’re eager to show off the new features and experiences we’ve been working on. We’ve noted below a few important things to be aware of before you jump in.

Certain content (games, apps, DLC) purchased in the new Store may only be available on consoles enrolled in the latest Preview update. This means…

• Games purchased on a console running the latest Preview update can only be played on that console or other consoles running the latest Preview update.
  
• Games purchased via Xbox.com can be played on any console.
• Games purchased on a console running the previous update can be played on any console.
  

When the latest Xbox One update is released to the public, this issue will be resolved and all games, apps, and DLC purchased on the Preview console will install and launch as normal on any Xbox One console.

I read this on another site as well. They didn't download the latest Xbox One update so if you are offline you could try and connect + download the latest Xbox One update and then install AC: Origins. Hope this helps.

same problem here. for some random reason I can not connect to my wifi.

other devices are getting connected to the wifi-network without any issues.

I have the latest xbox one (bought this week). looking forward for some help!