XAP file format is used for storing, installing and distributing software application. This file format is generally used for Microsoft Silverlight application.
It is ZIP formatted file extension and in order to view the content the extension of the file can be changed from XAP to ZIP. XAP file format is used by Windows 7 and 8 version of Microsoft operating system. It is a file archive format containing the required DLL files for software installation and AppManifest.XAML file in it. A single XAP file is required for installation of an application and this file is used for installation of small applications which do not require many files for installation.
In addition to the problem described above, i.e. the lack of the appropriate application to support the .XAP file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .XAP file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .XAP file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.