In this post, you’ll learn about the error code “0x803F81F5” that is returned while you are developing or testing Store-related operations in your Windows app
Windows Store Error Message
0x803F81F5
Error Description
Below is the description of this Windows Store Error.
You have reached the maximum number of devices that can be used with games and apps from the Store. To use this game or app on the current device, first remove another device from your account.