Is a Windows 7 license key valid for both 32-bit and 64-bit?

Ed Wilts asked on
I received a NFR copy of Windows 7 Ultimate at the Microsoft launch today.  It has a valid (I hope!) license key but the DVD is for 32-bit.  Is the same license key valid for 64-bit installations as well?  In other words, if I get a copy of the 64-bit DVD, can I use the license key I just received?

This will be a fresh install onto a system that currently has 32-bit Vista.

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Yes, it is valid for either 32 or 64 bit, its up to you which architecture you want to use. Please note 1 key, 1 license. You can't install 32 bit one computer and install 64 bit on another computer using the same key.
Andre Da Costa
Windows Insider MVP
MVP-Windows and Devices for IT
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TrekDozer replied on

Now that I know Win 7 64 bit works great with my hardware.  Can I legally upgrade my Windows Vista 32 bit to Windows 7 32 bit?  And keep both versions of Windows 7 on the same machine. 

If you have one Windows 7 license you can only have one install of Windows 7. 

To install Windows 7 32bit you will first need to format/delete the 64 bit install.


You will need to buy a second license/key to install Windows 7 twice at the same time. There is no discount on a second license if you already have a license.


Have Questions About Installing Windows 7?
FAQ - Common Windows 7 Installation Questions & Answers
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