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How can I retrieve Office keys from computer for OS upgrade?

syssolut
syssolut used Ask the Experts™
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I have a number of users who are changing from Windows 7 to Windows 10.   Many have Office 2010 or 2013, but most don't have there 25  digit key to re-install Windows.   I have tried Magic Jelly Bean and retrieved some of the keys to be able to re-install Office on Windows 10 but most are coming up just showing Windows 7 key.   How can I find the 25 digit key off the computer or registry if a keyfinder cannot find it?   Any ideas?
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IT administrator Small Business Owner
Commented:
Belarc Advisor will pull the product keys for Office that is installed via the Product key from installation media like a CD/DVD or digital download.
If you have purchased MS Office via a digital download from the Microsoft store, that key is stored in the users Microsoft Account and this probably won't pull it.
But I think what you are talking about are the former, installed from media.
Here is a review of 20 best Product key finders, and Belarc is at the top of the list.
Tom CieslikIT Engineer
Distinguished Expert 2017

Commented:
If you doing Windows upgrade by running setup.exe from Windows 10 installation folder/USB/DVD then your windows will be upgraded to Windows 10 and you don't need to reinstall Office.
If you need a clean installation then you can use Win KeyFinder
Click on Office button and you'll be able to safe key to txt file

https://www.techspot.com/downloads/downloadnow/7131/?evp=3d97691f9bffe3310d9e6e56798463f5&file=

Run website and wait 15 sec, download will start. Do not click on any advertisement

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NVITEnd-user support

Commented:
> Many have Office 2010 or 2013...


Not sure you can get the keys Microsoft changed the way the key is stored for 2013 and above. See solution here https://www.experts-exchange.com/questions/29165132/Migrating-from-Win-7-PC-to-Win-10-PC-Missing-CD-for-MS-office-home-and-business-2013-Adobe-Acrobat-XI-Standard-Can-the-system-registry-help-me-find-the-product-keys.html
Tom CieslikIT Engineer
Distinguished Expert 2017

Commented:
It's only about new Office 2016 and abow,, old one are still in registry, This was my screenshot
I've had "some" success with ProduKey by NirSoft

https://www.nirsoft.net/utils/product_cd_key_viewer.html

Download link(s) are at the bottom of the page.

Author

Commented:
Belarc Advisor worked perfectly.  It gave me the three key codes I needed.   Thanks