Is it possible to dual boot W7 and W10 with the same key?

Goose · 16 Aug 2016 at 11:13

I'm currently running Windows 10 using my old Windows 7 key and i'm wondering if it's possible to install Windows 7 again using the same key whilst still keeping my Windows 10 install.

Thanks

Goose · 16 Aug 2016 at 12:32

jpaul said:
I am dual booting 7&10, whilst I decide if i want to keep 10.
Although you enter the 7 key to authorize 10 , I thought it still granted you a new digital key that superseded that - I have noted down my 10 key (recovered with produkey)

I've been doing some googling and it's not entirely clear what happens to your key. One site said that after 90 days if you're still using Windows 10 then your key no longer works with Windows 7.

I'll probably just try and buy a new key I think.

Goose · 16 Aug 2016 at 13:57

I just contacted MS Support and they said I can still use my W7 key along with W10 since it's a full retail key and i'm free to dual boot.

Goose · 17 Aug 2016 at 17:50

stoofa said:
Cool - did you get a name of the person you spoke to?
Which number did you call them on?
This is going against all the advice we've already received from MS - your license is upgraded from 7 to 10 and once the "roll back" period has passed then you've got a single Windows 10 license, not one of each.

If you've been told different then I'd love to try and speak with the same person for sanity sake and also cost savings.

Ta

I used the Contact Support app in Windows 10 to speak to them that way. After installing Windows 7 it wouldn't activate no matter how many times I tried so i contacted them again and was again told that my Windows 7 key is still valid for use. In the end the problem was that I had to activate via phone but I do now have a Win10 and Win7 dual boot from a single Win7 key.