I can\'t test it but I need to know if it real , because I started working on project for it with .NET 4 so I must to be sure I can install it there.
So can I install .N
Based on the wiki entry for Windows XP Embedded:
Windows XP Embedded, commonly abbreviated "XPe", is a componentized version of the Professional edition of Windows XP.
So I'd say yes, because .NET Framework 4 is compatible with Windows XP Professional.