0x87e10bc5 is an error that affects apps downloaded from the Windows Store, indicating that the Windows Store and app files are corrupt. It can also occur if your device is not ready for Windows Store apps. It will display an error message that says Unknown HResult Error code: 0x87e10bc5 and will not allow you to run the apps you downloaded from the Store. The error does not depend on a specific app, but applies to all apps.
This error occurs in Windows 10 users who have installed the Anniversary Update, released on August 2, 2016. The update brought a number of new features to the Windows 10 operating system, but it also disrupted many things for some users, such as downloading and using apps in the Store. You’ll get this error message when you try to launch such an app and can’t get it to run.