Windows validation has failed
then you were redirected by microsoft and got another error which is shown below
Error
A problem has been encountered during the Microsoft Genuine Advantage validation process.
Due to technical difficulties, we are unable to determine whether your operating system is genuine at this time.
Please return later to complete the validation process.
[0x80080100]Therefore you need to use alternative download addresses by microsoft which are show below.
( I recommend to download all 3 links and installing order shown below is important too)
1- Windows Virtual PC
2- Windows XP Mode
3- Update for Windows 7 for x64-based Systems (KB977206)*
*Update to remove Hardware Virtualization Requirement for 64-bit Windows 7 (Optional)
