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Can I transfer my OEM version of Windows to another PC?

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Can I legally transfer my OEM version of Windows to another PC?  (AKA - Can I put a new systemboard in my OEM PC?)

Few of us are both IT and legal experts but we all have our own views of Microsoft's licensing rules and how they apply.  There are frequently questions on this site about OEM versions of Windows and whether it is possible to either transfer the operating system of an OEM system to another machine or to continue to use the OEM system installed on a PC after significant hardware changes to the computer.

The purpose of this article is to allow the E-E community to reach a consensus view on Microsoft's intended interpretation of their OEM EULA's for operating systems.  That is, even if it is physically possible to move the system, is it legal to do so? Feel free to post your own views and links to supporting evidence.  I intend to update the body of the article regularly based on any comments added and then this article can be used to help support comments in threads in the Operating Systems Technical Areas.

Below are some pointers from Microsoft supporting the view that an OEM Windows installation cannot be transferred to another system or continue to be used if the system board has been replaced (unless the system board is replaced with a board supported by the OEM).

I've included links to the articles - as Microsoft relocates documents on a regular basis please post any dead links for updating.

I hope you find this helpful and feel able to contribute your own comments for inclusion.


OEM and FPP - vive la difference!

Education Operating System Licensing Q&A

From: http://download.microsoft.com/download/4/e/3/4e3eace0-4c6d-4123-9d0c-c80436181742/oslicqa.doc.

6. What is the difference between OEM product and Full-Packaged Product (FPP)?

ANSWER. OEM products are intended to be preinstalled on hardware before the end user purchases the product. They are “shrink wrapped” and do not come in a box like the retail products do. Full-Packaged Product (FPP) is boxed with CD(s), manuals, and the EULA and is sold in retail stores in individual boxes. The End User License Agreements (commonly referred to as “EULAs”) for OEM and FPP products are slightly different. One main difference is that an OEM operating system license (such as the license for Windows) cannot be transferred from its original PC to another PC. However, the FPP version of Windows may be transferred to another PC as long as the EULA, manual and media (such as the backup CD) accompany the transfer to the other PC. Also, when a customer purchases an OEM product, the OEM license requires the OEM to provide support for the product.


9. Can I transfer my operating system license from an old PC to a new one?

ANSWER. Not unless it was purchased as a Full-Packaged Product from a retail store (i.e., Windows in a box). Current OEM licenses for all Microsoft operating system products are not transferable from one machine to another. The End User License Agreement (EULA) governs the terms for transfer of licenses. Some EULAs for copies of certain older OEM operating system products (i.e., MS-DOS®, Windows® 3.1, and Windows for Workgroups 3.1) distributed in 1995 or earlier may permit transfer of the OEM operating system software license under limited circumstances. (See Software Product Transfer section of your End User License Agreement.)

10. If I “retire” a PC with an OEM license on it, can I use that software on a new PC?

ANSWER. No. To put it simply, OEM product is “married” to the original PC on which it was installed. Current OEM licenses are not transferable from one machine to another. The software cannot be moved from PC to PC, even if the original PC it was installed on is no longer in use. This is true for all OEM software – operating systems and applications.

11. Rather than purchase completely new PCs, my organization performs in-place upgrades to the hardware on many of our computers. We often times only replace the motherboard, processor, and memory. Since the COA is still on the case and the OS is still installed on the hard drive, this computer is still licensed, right?

ANSWER. Generally, you may upgrade or replace all of the hardware components on your computer and maintain the license for the original Microsoft OEM operating system software, with the exception of an upgrade or replacement of the motherboard. An upgrade of the motherboard is considered to result in a "new personal computer." Microsoft OEM operating system software cannot be transferred from one computer to another. Therefore, if the motherboard is upgraded or replaced for reasons other than a defect then a new computer has been created, the original license expires, and a new full operating system license (not upgrade) is required. This is true even if the computer is covered under Software Assurance or other Volume License programs.

12. If I upgrade some of my PC components, do I have to purchase a new operating system?

ANSWER. The answer depends on the components that are upgraded or changed in the PC. The operating system licenses must remain with the device that retains the motherboard, chipsets, and chassis that include the serial number of the device. The operating system may be installed on a new/replacement hard drive as long as the operating system is first removed from the old hard drive.

Please refer to the section on “Modifications to hardware and how they affect the activation status of Windows XP” in the following link for a more detailed explanation regarding specific hardware changes. The same hardware component changes that can be made to a PC before requiring re-activation of Windows XP are the same changes that can be made before a PC is considered to be “new” - and when a new license for OEM software is required.

Microsoft® Product Activation for Windows® XP

From: http://download.microsoft.com/download/2/1/6/21654b16-6c81-4d96-9390-5203cd43d07d/WindowsProductActivationTechnicalMarketBulletin.doc

Modifications to hardware and how they affect the activation status of Windows XP

Product activation rechecks the hardware it is running only to help reduce illegal hard disk cloning – another prevalent piracy method. Hard disk cloning is where a pirate copies the entire image of a hard disk from one PC to another PC.  At each login, Windows XP checks to see that it is running on the same or similar hardware that it was activated on.  If it detects that the hardware is “substantially different”, reactivation is required.  This check is performed after the SLP BIOS check discussed above, if the SLP BIOS check fails.  This means that if your PC is pre-activated in the factory using the SLP pre-activation method, all the components in the PC could be swapped, including the motherboard, so long as the replacement motherboard was genuine and from the OEM with the proper BIOS. As noted above, installations of Windows XP made using volume licensing media and volume license product keys (VLKs) will not have any hardware component checking.

What if the reason for the replacement system board is because the old one was defective?

Licensing FAQ

From: http://www.microsoft.com/oem/en/licensing/sblicensing/pages/licensing_faq.aspx

Q. Can a PC with an OEM Windows operating system have its motherboard upgraded and keep the same license? What if it was replaced because it was defective?

A. Generally, an end user can upgrade or replace all of the hardware components on a computer—except the motherboard—and still retain the license for the original Microsoft OEM operating system software. If the motherboard is upgraded or replaced for reasons other than a defect, then a new computer has been created. Microsoft OEM operating system software cannot be transferred to the new computer, and the license of new operating system software is required. If the motherboard is replaced because it is defective, you do not need to acquire a new operating system license for the PC as long as the replacement motherboard is the same make/model or the same manufacturer's replacement/equivalent, as defined by the manufacturer's warranty.
The reason for this licensing rule primarily relates to the End User Software License Terms and the support of the software covered by that End User Software License Terms. The End User Software License Terms is a set of usage rights granted to the end user by the PC manufacturer and relates only to rights for that software as installed on that particular PC. The system builder is required to support the software on the original PC. Understanding that end users, over time, upgrade their PCs with different components, Microsoft needed to have one base component "left standing" that would still define the original PC. Since the motherboard contains the CPU and is the "heart and soul" of the PC, when the motherboard is replaced (for reasons other than defect) a new PC is essentially created. The original system builder did not manufacture this new PC, and therefore cannot be expected to support it.


Other useful links:

Microsoft's OEM information pages: http://www.microsoft.com/oem/en/Pages/default.aspx

Michael Stevens' Blog on the Windows EULA: http://www.michaelstevenstech.com/oemeula.htm


Last Reviewed: September 2010
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