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How many machines can I install a single copy of Microsoft Office on?

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Summary: Depending on the situation, the number of machines you can install a single copy of Microsoft Office on is unclear.

I wanted to know if we're allowed to use a legal copy of Microsoft Word (legally meaning I purchased the disk) on more than one computer. I switched computers and now I need to install it on a different computer than the one I'd been using before. The old computer is still active. Can I re-install on my new computer? Will it recognize and allow me to use the product key?

If you're moving from one computer to another, the answer is easy. But if you're adding an installation, the answer isn't quite as clear.

If you're moving your installation of Office (or Windows, or pretty much any licensed software package) from one machine to another, the answer is simply "yes". That means you plan to stop using the package on the old machine, and start using it on the new. No problems, no conflicts, and no questions. About the worst this scenario might get is with over-aggressive anti piracy techniques that might require you to contact the software's manufacturer to verify that you're moving, and not copying, the installation in order for its activation to succeed.

On the surface, copying is also simple: it's illegal. Regardless of whether the application can be installed on another machine, and whether or not it works, most software license are "single seat"; meaning that you're allowed to have the software installed on only one machine at a time.

In practice things get just a little grayer than that, though. Some software publishers have license agreements that state you may install on a certain number of machines as long as only one is in use at any time. Others allow you to make a single copy of the software as a backup.

For Microsoft Office specifically, I was lead to believe some time ago that one could install it on up to three machines for personal use. Today I must assume that's wrong, as I can find no documentation to back that up.

"On the surface, copying is simple: it's illegal."

There are plenty of options besides purchasing an additional copy of Office, especially if you can't justify the additional cost. Consider:

  • Purchasing just the program (Word, Excel, etc.) you need, rather than the entire package.

  • Check out eBay, not only for bargains, but also for new copies of older versions of Office which are often found at a steep discount. You may not need all the latest and greatest features, so why pay for them?

  • Open source alternatives such as Open Office. Besides being free, the software is compatible with current Microsoft products, and quite good.

Related:

Article C2212 - November 1, 2004

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Recent Comments
49 Comments

I have Office Small Business 2007 upgrade,3 user license, installed on three laptops at home. One laptop crashed, it's not worth repairing as it's old, and I bought a new laptop. Can I re-load the Office Small Business 2007 upgrade on the new laptop. I've tried to get an answer on Microsoft's website but no luck.
Thanks.

I believe you can, yes. (At least, I'd do it :-).
- Leo
02-Apr-2009

Posted by: Bob at April 1, 2009 9:26 AM

Hi Leo, thanks for the article's information on MSOffice. My verson is "MSoffice 2007 Home and Student" 60 day trial that came with the computer. SOme comments state if the program is OEM, I'm sunk. No swapping is possible. MSoffice2007to full version was converted via online payment and installation 3 days ago, I want to have it on a 2nd desktop if possible. Can be installed using same product key? If so, how do I do it? Or do I have to break down and call MS support?

Thanks.
Aly

Posted by: Aly at April 1, 2009 12:01 PM

hi leo, nice to have a person who have a time to answer people problem.

my question would be,

how many times we can install the MICROSOFT OFFICE 2007 SBE - OEM,

Some say 1 time thru the internet and 5 times u may activate thru a phone call,

can u tell me

many thanks

Posted by: kutak at April 17, 2009 2:13 AM

Hi Leo,

I just got a new laptop---I took my microsoft office disk from my OLD computer and installed it on the new one .

I keep getting the licensing agreement pop up on my new computer. what did i do wrong?

Posted by: Bob Small at April 21, 2009 11:01 AM

i have lienced office 2003 but i dont know in waht pc i installed that now that pc has destroyed and now i want to install this on new pc but it doesnt install and says running in another machine, so what should i do

Posted by: haren s chauhan at May 1, 2009 4:14 AM

I legally bought Microsoft Office 2007 for my Windows XP computer, my computer got a virus, I did a "system restore" on my computer, and it's now virus-free and in the original manufacturing conditions. I've tried repeatedly to re-install Microsoft Office 2007 using the disks, but the software no longer accepts the product key. Does that mean I can no longer install it?

Posted by: Jenny H at June 6, 2009 1:30 PM

Some Microsoft Office Word software you can download to three computers. Others you can only download to one computer. Read through the End User License Agreement and figure out whether your program is a FPP, a OEM, or MLK. (http://office.microsoft.com/en-us/products/HA102240441033.aspx)

FPP ... 3 computers.
OEM ... 1 computer
MLK ... 1 computer

... according to http://www.microsoft.com/about/legal/useterms/

Hope this helps! Don't rely on it totally since I just stumbled upon it.

Amy

Posted by: Amy at June 26, 2009 3:31 PM

With reference to your article: "How many machines can I install a single copy of Microsoft Office on?", Is it safe to assume that the "Currently Published" EULA available from the MS website applies to Office Pro 2003? Maybe I should open the disk and see what the disk copy of the EULA that came with 2003 says. What do you think?

Posted by: Peter Brixey at July 10, 2009 7:07 AM

Hey Leo, regretfully your summary:
"Depending on the situation, the number of machines you can install a single copy of Microsoft Office on is unclear."
Is totally correct. So correct that Microsoft themselves can not answer the question. I have been trying to get an answer for over two weeks now. Here is some of the fun I have had:

1) Asked numerous vendors only to get answers anywhere from 1 to 2.
2) Went to the Microsoft web site and downloaded the Office 2007 license agreement, Office2007HNS_MSLT_EN, which reads 3 devices.
3) Contacted Microsoft only to be told by them that I never replied back to an email they sent (Note: this was their FIRST reply to me. Wrote back and waited over a week, no reply. Wrote again threatening to escalate the problem. Got a reply the next day that said it depended on which Office 2007 product I had. According to the rep Home and Student can be loaded on three computers and the others only two.
4) Went back out to the Microsoft web site via a search on Office 2007 License and the we page where it states this in question #18, http://support.microsoft.com/kb/927921, does NOT answer the question but sends you off to the Privacy page which has NO information at all about the number of computers you can load Office 2007 on.
5) I am currently in the process of once again asking the Microsoft rep via email to explain the Inconsistency between the license agreement on their site and his reply. If I ever get anything concrete, (in the form of a legal license agreement and not just a reps opinion) I will try to get back to you.

Posted by: Kevin Satterfield at September 13, 2009 2:51 PM

I'm back! Got the reply back from Microsoft today and here is what they said:

"All the versions of Office 2007 can only be installed on two computers apart from Office Home & Student 2007.

I have already sent the feedback regarding the change in the license agreement to my supervisor & the web design team & soon the changes will reflect on the License Agreement."

Seems they were unaware of the discrepancy in the online version of the license agreement.

But here is something that will help your "viewers". The best way to obtain the license agreement is to view it directly via their copy of the software, (if it is loaded). In Office 2007 Microsoft "hid" the About box which gives you access to the license agreement. To find it do the following:

1) click on the round Office button at the left top of the window
2) click on the ???? Options button at the bottom right of this pop up window. ???? is the name of the application you opened, Ie Word, Excel, Access, etc.
3)In the left hand column at the bottom, click on Resources
4)On the Resources page on the right hand side the last entry should be About. Click on the About button to the right
5)On the about screen around 2/3 down on the page click on the blue text that reads View the MICROSOFT SOFTWARE LICENSE TERMS and there is your software license agreement which will tell you how many "devices" (computers) you can load your version of Office 2007 on.

I know it is not the easiest process but it is the most exact. Hope this helps everyone.

Posted by: Kevin Satterfield at September 14, 2009 11:13 AM

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