Windows 8-1 Pro retail OEM downgrade to Windows 7 Pro

I have just purchased 6 licenses of Windows 8.1 Pro OEM along with ACER desktops. On installation, I realised that one of my applications is not supported under Windows 8.1 Pro.
Please let me know my downgrade rights from Windows 8.1 Pro retail license to Windows 7 Pro license and also how to go about downgrading the systems.
skumar

Hello,
retail(FPP) licenses of Windows 8.1 pro are not qualified to downgrade it to Windows 7 pro. however, OEM prienstalled licenses allowed downgrade rights to Windows 7 pro.
more details about how to downgrade OEM licenses of Windows 87.1 pro on this link:
http://www.microsoft.com/OEM/en/licensing/sblicensing/Pages/downgrade_rights.aspx#fbid=5TYicMOm8K9
thanks
diramoh

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