Find your Office product key
An Office product key uses a combination of 25 letters and numbers in this format:
How to find your product key
The way you can find your product key depends on how you got Office 365, Office 2016, or Office 2013. Select how you got Office from the options below.
For security reasons, the full product key isn't displayed within Office or Windows.
Instead, you can do one of the following:
View the Microsoft account that's associated with your Office install. You can do this by opening a document in Word 2016 (or any Office app) and going to File > Account.
Look for the email address after Belongs to below the product name. This email address takes the place of your product key. You can use this account to reinstall Office from My Office Account and to reactivate Office without a product key.
View the last 5 characters of the product key. You can do this by using the command-line method described in Manage multiple one-time-purchase Office installs.
View the full product key for one-time purchases of Office. You can view the full product key for Office Home & Student, Office Home & Business, and Office Professional on the My Office Account page. Here's how:
Go to My Office Account and sign in, if prompted.
Select your Office product.
Select View your product key.
Do you manage several installations of Office that are all tied to one Microsoft account? Did you lose track of which product key was used to install Office on which PC? If you answered yes to these questions, see Manage multiple one-time-purchase Office installs that use the same Microsoft account to learn how to identify which Office product key was used to install Office on each PC.
If you have already installed multiple one-time purchases of Office and activation is failing on subsequent installs, see Change your Office product key.
If you paid for an Office product to be included on your new Windows 10 PC, a digital product key is transmitted to your PC when you activate Windows 10. You won't receive a printed product key. Instead, you'll see a message similar to the following when you start Word 2016 (or any Office app):
If you don't see the message that Office was included with your PC, this means that Office is installed on your new PC as a 1-month trial of Office 365 Home. You don't need a product key to start a trial.
To learn more, see Activate Office on a brand new PC.
If you bought an Office box, your Office product key is located on a card within the box:
If you bought an Office product key card, you might need to carefully scratch off a silver foil coating to reveal your product key.
Tip: A product box or product key card might also contain bar codes and other groups of letters and numbers, but the product key will always be shown in the format XXXXX-XXXXX-XXXXX-XXXXX-XXXXX.
Next step: I found my product key. Where do I enter it?
If you purchased and downloaded Office from an online store, the product key might be in your email receipt.
Try the following to find this confirmation email:
Check your spam, bulk, or junk mail folders for the email.
Try searching your email for the word “Microsoft” or the name of the company where you bought Office.
If you have multiple email accounts, check the email account that you provided when you purchased Office.
Note: Product keys aren't emailed for online purchases of Office 365 because you don't need a product key when buying Office 365 online.
If the product key isn't in the email receipt or if you can’t find the email receipt, you may be able to retrieve the product key by using the Order History link for the store you made the purchase from:
Microsoft Store: Go to www.microsoftstore.com and sign in with the user ID and password you used to purchase and download Office. After you sign in, click Digital content to view the product keys.
Next step: I found my product key. Where do I enter it?
Here's how to find your product key through the Home Use Program. If you need more help, see Install or reinstall Office through the Home Use Program (HUP).
Go to microsofthup.com.
Select the Order History link in the upper right-hand corner of the page.
Enter the work email address that you used to buy Office. This will send an email to yourself that contains a link to your order history.
In the email you receive, select the link to view your order history.
On the Order History web page, select your order number.
Your product key is listed under Microsoft Office Product Key (FPP) on the Order Details web page.
If there is no product key listed, your HUP program code has expired. Please contact your Benefit Administrator to determine if the program code has been updated or if your employer is still eligible for the Home Use Program. After you have confirmed your eligibility, you can contact support for assistance.
You'll be prompted for a product key when you install the following versions of Office from a DVD or by using the offline installer:
Office Home & Student
Office Home & Business
To continue, you can sign in with your Microsoft account by selecting the Sign in with an active account instead link in the Enter your product key dialog box. There's no need to enter a product key, but if you want to find it, here's how:
Go to My Office Account, and then select Install from a disc.
Select I have a disc, and then select View your product key.
If you're at work and Office Professional Plus is prompting you to enter a product key, ask your administrator for a product key. To learn more, see Activate volume editions of Office.
I lost my product key
If you associated your copy of Office with a Microsoft account, you don't need your product key to reinstall Office 365, Office 2016, or Office 2013. Just follow the steps in Install Office on your PC or Mac.
If you lost your product key, but have a valid proof of purchase, Microsoft support may be able replace your product key or provide other options. Contact Microsoft support for assistance.
If you believe the product key has been lost, stolen, or misplaced and you simply would like to buy a newer version of Office, you can click Buy Office to compare prices and options.
If you're shopping for Office elsewhere, we recommend that you review our tips for safer shopping to make sure you're buying genuine Microsoft software. Be sure to read the tip called Beware of Product Keys Sold Separately if you want to buy a product key online.
If you associated a Microsoft account with Office, you don't need a product key
If Office is prompting you for a product key, you can enter your Microsoft account instead. Try selecting the Sign in with an active account instead link in the Enter your product key dialog box and sign in with the Microsoft account that you associated with Office. We can help if you can't remember the Microsoft account you use with Office.
Are you trying to reinstall Office? You don't need a product key to reinstall Office 365, Office 2016, or Office 2013. Just follow the steps in Install Office on your PC or Mac.
My Office product key stopped working
If your Office product key doesn’t work, or has stopped working, you should contact the seller and request a refund. If you bought a product key separate from the software, it’s very possible the product key was stolen or otherwise fraudulently obtained, and subsequently blocked for use. Unfortunately, there are many dishonest sellers who offer stolen, abused, or otherwise unauthorized Microsoft product keys for sale. Sometimes these product keys are printed on counterfeit labels or cards with a download link to Microsoft software, and sometimes they’re distributed with software media that is unauthorized for resale, such as promotional media, original equipment manufacturer reinstallation media, or other Microsoft program-specific media.
Contact support about my product key
If you’ve followed the guidance in this article and still need help, visit our Microsoft support page for assistance.