How [mod removed] do I fix this error 0x803FB107

That’s interesting, it seems that something is causing problems with the Microsoft store
Okay, let’s try to fix that one first:

A. Do a clean boot in your PC and try again
https://support.microsoft.com/en-us/topic/how-t...

B. Disable IPv6 temporarily
Open the Control Panel in Windows.
After opening the control panel, set the “View by” on the top-right corner to “Large icons“.
Click on the “Network and Sharing Center” option.
Here, click on the “Change adapter settings” link on the left panel.
Now, right-click on the active network adapter and select “Properties“.
Go to the “Networking” tab.
Here, uncheck the “Internet Protocol Version 6 (TCP/IPv6)” option.
Click on the “Ok” button to save changes.
Then close all the windows, restart your PC and try again

C. Reinstall the Microsoft Store and all its components
Try both methods provided by Lester
https://answers.microsoft.com/en-us/windows/for...

D. Create a new local administrator user in your PC and try from there
https://support.microsoft.com/en-us/windows/cre...

XDDDDDD Dude I cant even install the Xbox app xDDDDDDDDDDDDDDD

So how this started , the game wanted to install in whatever drive ( it did not asked me ) so I canceled the install and when i hit it again the error appeared .

I cant follow this file explorer > my computer > right click on the drive > properties > next to file system , I am on win 10.

Hi One

I see that you’re trying to install the game using the Microsoft store

If you don’t mind please open the Xbox app in your PC and try installing Forza horizon 5 from there one more time (or download if you don’t have the app)

Sup Sup ! I am using win 10 , and I have tried anything related to reseting the store .