I'm getting a download error for a game from Game Pass and I tried to fix it with no luck

Try to check for the latest windows update: How to get software and driver updates for Windows 10 | Xbox Support

If the issue persists, try to clear the Microsoft Store cache

1. Press Windows Key + R to launch Run.
   
2. Enter wsreset.exe and hit Enter.
   
3. Once the reset process finished, restart your PC and then check if the Windows Store App works as it should.
   

The Xbox App depends on the Microsoft store App to run properly. So, if there is something wrong with the Store app, many games and apps won’t even download.

In this case, resetting the Store cache can fix the problem, so make sure you do that by following the steps above.

Hello, how are you? My name is Mateus. I'm an Independent Advisor and I'll be glad to help you today.

First I'm sorry you're having this problem. I ask that before you try any solution below, make sure your windows is up to date with the updates, for that follow the instructions provided below.

Select the Start button, and then go to Settings > Update & Security > Windows Update.

*Check if currently installed version is 21H1.

*If the updates are ok, proceed with the solution below.

Download the Create Windows 10 installation media application from the link below, at the end of the download run the application, and then follow the instructions given by the program at the end click on upgrade. Rest assured none of your files will be lost, this is a system restore that will try to fix this error.

https://www.microsoft.com/en-us/software-downlo...

Alright so I am now on version 20H2 and have downloaded all optional updates.

Just tried launching a game. No luck lol.

Also installed a new game from game pass and can’t launch either due to error.

Splendid.

I have had some trouble with Halo:MCC since Halo 2 was added. The game refused to launch and after trying the other options online (launching the without anti cheat version, etc) I have tried to reinstall.

Every time I try to install via the Xbox app, it immediately fails, giving error code 0x803fb107, with no indication of what that means.

I'm not having any issues with other games, and I've tried the usual (restarting etc) and no luck.

Some help getting it reinstalled would be appreciated.

Hi any update or fix with this? Getting the same error code, i uninstalled the game and now cannot install again, game isnt showing up in my apps/games, error while trying to download from Xbox Game Pass PC.

Do you have already try this?:

Fix for Game Pass for PC Admin Error (0x80070005)

In my case I could not even uninstall the latest windows update, I got an error, and I think I tried that fix and it did not work either, I think the best thing in your case is to wait for a solution from windows update because reinstalling windows is not
for everyone, in my case I am satisfied because it solved other additional errors I had besides being able to download the Xbox Game Pass games normally, I wish you good luck with that and I hope an official solution will come out soon