Hi K.O,
Welcome to the Microsoft Q&A forum and thank you for reaching out.
That message you're seeing appears because the store page has been removed globally. Forza Horizon 3 was officially retired from the Microsoft Store in 2020 due to licensing agreements expiring. This means it’s no longer available for purchase or visible in the store for new users. However, if you previously bought the game digitally, your ownership is still valid, and you should be able to download and play it through your account.
Please verify your ownership by signing in with the same Microsoft account you used to purchase the game and check your purchase history at Microsoft Account.
Then you can check for Install Drive Settings
- Go to Settings > System > Storage and confirm your SSD is selected for new apps.
After you finish the checking, please proceed to the steps below:
1 - Clear Xbox App Cache
- Sign out of the Xbox app and Microsoft Store.
- Delete temporary files in
Users\<YourUserName>\AppData\Local\Packages\Microsoft.XboxApp_*
2 - Fresh Install
- Remove broken Forza Horizon 3 entries via PowerShell by this command
Get-AppxPackage *OpusPG* | Remove-AppxPackage -allusers - Restart and reinstall through the Xbox app.
I look forward to receiving your update. Let me know if you need further assistance, feel free to ask me by clicking "Add Comment" or "Add Answer" if you cannot add comment so your response will be visible. Thanks for your effort.
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