Version 10 of Mathematica in Windows XP

I have contacted the Wolfram support ([CASE:1292216]):

Dear Andrew,

Thank you for contacting Wolfram Customer Service. We simply ended our support of XP shortly after Microsoft had announced they would no longer support XP themselves. XP is going to become to difficult to handle without any kind of support from Microsoft as many of the issues we would run into would be from the OS interaction with Mathematica and without updates for the OS each machine could almost be running its own version of XP. Please let us know if we may help further.

Regards, Wolfram Research, Inc.

The only solution: find an installed version and copy, but there is no guarantee it will work (mine worked on Windows XP on Hyper-V VM) and work correctly.

One can use Microsoft Application Verifier to cheat the Windows version.