If you sideload one of these bad files, you don't just get an error; you get the dreaded grey tile. It sits there, mocking you, reminding you that the servers are dead.
The following is an example of a XAP archive verification tool: windows phone xap archive verified
To use these archives, you typically need to bypass official restrictions since the Store cannot verify them. If you sideload one of these bad files,
: While Windows 10 Mobile supports XAPs, it relies more heavily on .appx bundles. you don't just get an error
Before diving into the verification process, we must understand the container. A (Silverlight Application Package) is the installation package for Windows Phone 7, 8, and 8.1. Technically, it is a compressed archive (ZIP format) containing:
