The xadd file stores add-in that adds extra features to Expression Web. This file type was marked obsolete and no longer supported format. The XADD file belongs to the Plugin Files category like 179 other extensions. The most popular software supporting XADD files is Microsoft Expression Studio, developed by Microsoft Corporation. More information about XADD files or Expression Studio software may be on its website. The XADD file extension is associated with 1 operating system. It can be found on any system but is useful only on Windows. Microsoft Expression Studio should handle this file. Microsoft stopped Expression Studio in 2012.
Programs that can handle XADD files are Microsoft Expression Studio software program. The XADD file stores add-in adding other features to Expression Web. This file type entry was marked obsolete and no longer supported format. This is no longer actively used and most likely obsolete file type. The case typically for old operating systems’ files, long discontinued software’s file types, or previous versions of certain files replaced in programs’ higher versions.
179 file types are given the XADD extension but most often not compatible. You must use different applications to handle each of them. The XADD format was originally developed for the Microsoft Expression Studio application by Microsoft. In many cases, modification or reading Expression Web Add-in files is done in Microsoft Expression Studio program.
When double-clicking a file to open Windows examines the filename extension. If Windows recognizes the extension, it opens the file in associated program. When Windows does not recognize an extension, you receive a message to select an app for opening the XADD file. It means the operating system does not have a default app associated with the XADD file type.