Windows 10 Pro Refurbisher Install

Porthos said:

MAR and MRR are two different programs.

Thanks. I've bought several MAR products so have stickers, documentation, etc... not MRR.

Has 25 characters just like a standard COA.

Mine is just like the one posted above for Windows 10 Pro.

mado said:

“Refurbisher affixes a refurbisher COA to the refurbished PC.” Microsoft’s words not mine...

It wouldn't surprise me if that applies to MAR's.
I've bought many refurbished computers over the years and the stickers on them that looked like the images that have been posted.

I don't know the requirements for MRR's but that's what you probably have.
Can you contact the refurbisher and get them to activate what you bought from them?
--- I’d like to believe they should be able to tell you over the phone what product key to use to get it activated.

Go back to post #2 and use the ShowKeyPlus link Bree provided.
--- Find out what ShowKeyPlus reports.
--- Instead of trying to change a Windows 10 Pro non-existent product key you might be able to use the Windows 8.1 Pro key if ShowKeyPlus records it. I'm not sure how yet, but at least get the ShowKeyPlus information.

Superfly said:

What I'm getting at is .. are these OEM-NonSLP keys or what ?

I'll run my number through show key and post the results.