I cant start the game overwatch i have buy om a store.

I cant find it on ready to install and i dont find it om the microsoft store it is the problem

Thanks, that's the problem
You're receiving the message due to the game wasnt purchased with any of the accounts

Probably was a temporary bug on the Xbox page/app

And yeah, you're not able to buy it due to the game is not available to be purchased via Microsoft store

https://www.xbox.com/games/store/Overwatch-Orig...

the system is all kinds of messed up right now, i cant buy certain items in the store without being asked for parental consent (on a full adult account, which has no settings out of place etc.), and then when i try and view overwatch in the store via the
game hub i get an error message with a sad face and try again later.... its really weird on here at the moment and they're providing very little help if any at all.

Also to add - I have baught minecraft on the Microsoft store, but I cant buy the game pass on the pc xbox store

I do not see an option to buy or gift Overwatch Origins editon in the Microsoft or Xbox store. I own the game as well so I signed out of my account to see if it was a glitch. After signing out I found a notation under the redeem code box that states Overwatch
Origins Edition is currently not available. My guess is unless you have a code the Origins Edition is no longer available for purchase.