Hello, I'm trying to play Halo Master Chief Collection digital version which I have owned...

Halo 3 is part of Halo: The Master Chief Collection which consists of Halo 1 - 4.

https://www.microsoft.com/store/p/Halo-The-Master-Chief-Collection-Digital/BRNVR30J0SJ2

Hello chrisgerrad1,

Thank you for confirming. Halo: Combat Evolved does require Halo: The Master Chief Collection in order to play. Combat Evolved acts as an add-on of sorts for the Master Chief Collection. You will need the full purchase of the Master Chief Collection in order to own all the titles within the package.

I hope this helps!

-Tali

To play Halo The Master Chief Collection on PC, you will have to purchase the PC version. You do not get for free for PC if you own it on Xbox, as it is not a Play Anywhere title.

Hi, the version of odst you purchased, was it the xbox one version for Halo the Master chief collection or the Xbox 360 version of the game? If it was the Master Chief collection version, then you need the master chief Collection installed on your Xbox
One to be able to download the game.

Halo Reach is not on the Master Chief Collection disc, only the Halo CE, 2, 3 & 4 are. If you want to play Halo reach, then you can purchase the dlc for the Master Chief Collection or download the Backward Compatible version.