Software that can be used for conversion of appx file type to xap format.
APPX packages are apps for Windows Phone 8.1 and later, whilst XAP packages were used up until Windows Phone 8.
There doesn't seem to exist some easy and convenient way how one could be converted to another (in this case APPX to XAP) or vice versa. That's something the developer of the app could do if he would release two versions for both Windows Phone 8 and 8.1.
Unfortunately, there is no detailed software record in the database for this conversion.
This conversion entry was verified by us and conversion from appx to xap was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it can't be done because incompatibility between programs, caused by closed file formats, very limited support or by other problems.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion form below with as much as information as possible so we can fix it.
Additional links: Open appx file, Open xap file
APPX
Files with appx file extension are application installation packages for Windows 8 and Windows Phone 8 and newer operating systems. They are used to install new software.
XAP
Files with xap file extension are mainly related to Windows Phone apps and Microsoft Silverlight installation resource files. Used for Silverlight apps.
Files with xap extension are used by Microsoft XACT program for one of its default file types. It is a document project saved in a text file format.
Files with xap file extension might also be potentially found as old scripts for Xbox 360 video console. Not related to later Silverlight or XACT packages.
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