Am I ready to play Halo 5 at launch?

Hi, so I digitally pre ordered Halo 5 of the Xbox market place before it went Gold. Now the thing is I have my Xbox on energy saving mode so l don’t know if the game is properly downloaded. I deleted it and re downloaded it once it said it was 42.whatever G. That way I could make sure l had the full game downloaded. However today I got a message from Xbox saying
"
Xbox Live
1:10:20 PM
Thank you for pre-ordering Halo 5: Guardians. To ensure you have the correct update installed and you are ready to play at launch, please visit: http://aka.ms/h5launchupdate."
That link doesn’t work. it just brings me to the Microsoft websites home page.

Has anyone else gotten this message? Does the link work for anyone else? Most importantly how do I know if I have the update and am ready to play at launch?

Thanks

i got the same message. how do we check. do not need this day before launch

If your halo 5 size is 54.8gb youre good to go.

i got the same message. how do we check. do not need this day before launch