Windows 10: How to find Office 2016 serial key

I need to ghost my HDD onto a larger one.
Everything went fine, using Acronis disk director and true copy, except that Office 2016 isn't activated.
I've searched my email history to try and find the serial number, but can't find it.
I then tried magic jellybean, but this doesn't seem to work on later than Office 2010.
I've seen a few apps, free online, that reveal the last 5 digits of the serial, but nothing else.
Surprisingly, those last 5 digits are the same both for my Win 10 and Office 2016. I got a free upgrade of the latter from Win 7.
How can I find my license key, please?

:)

 

Office 365 or Office 2016

Under info for the new office listing on My Visual Studio it states.

Office Professional Plus 2016 (x86 and x64) - (Multiple Languages)
To obtain the product, follow these steps:

Step 1: Get your product key by clicking the ‘Get key’ button on the right.

Step 2: Go to the Office website by clicking the ‘Get it now’ button.

Step 3: Enter your 25-character product key and continue as directed on the site.

Released: 9/23/2015

And for the discontinued it states.

Office Professional Plus 2016 (Discontinued)
Info
Keys
Office Professional Plus 2016 (x86 and x64) - DVD (English)
No additional details are available for this file.

Released: 9/22/2015
SHA1: 213A8A0F8849516704101CB6C49F6A027B0D6D5F
File name: en_office_professional_plus_2016_x86_x64_dvd_6962141.iso

I'm thinking option one is going to be my only option. I'm fine with that as long as I can get Outlook to work with my ISP's pop3 e-mail. Last time I tried that with the new 2016 install I could not get it to work, no way no how. All the same settings that work with the ISO install?

EDIT: I should mention, for me as far as I know, neither of these options are a subscription. They use two different keys but they are perpetual one time activation licenses. I only ran the new download briefly though, as I could not get outlook to work. I bailed and went back to what works.

 

Windows 10 serial on OEM


So I'll summarize steps made...

1. Saved serial number (taken with Belarc Advisory) from preinstalled (half chinese language) Windows 8.1 (don't know exactly the version, suspect Windows 8.1 with bing) on tablet
2. Formatted tablet
3. Tried to make a clean Windows 10 (HOME, HOME N and also PRO, everytime with the same result) install with ISO taken with MediaCreationTool, during install (and also after completing installation) it says that the saved serial is not valid
4. Tried to reinstall Windows 8.1 (ISO taken with MediaCreationTool again) HOME, it says that the serial is not valid

So i suspect that the saved serial, is from a WINDOWS 8.1 WITH BING OEM version and this kind of ISO is not accessible/downloadable anywhere (at least I can't find it, any suggestion?)

Still not tried SHOWKEY with that serial, I am in office now, and the serial is saved on a usb pen at home, will try this evening.

So I'm stucked but if everything is like I suspect, it's incredible. If I have a tablet/notebook/netbook with Windows 8 preinstalled, it seems that I can update to Windows 10 without problems, but if I want to make a clean Windows 10 install that serial is not valid...

 

serial key

Hello Ankitagupta: My name is Ron. Please describe what you want in more detail. What application: Windows, Office, other? What version of that application: Win 10 / Win 8 / Office 365 Home / Office 2016 Home and student etc If you are asking about the
"serial number" used to activate a program, in Microsoft that key is actually called the "Product Key". For Office and Windows it is 25 letters and numbers, written in 5 groups of 5.