Bree said: View Post
The discussion so far has been about retail/OEM consumer editions and licenses. If your business used volume licensing then the rules are different. It's not an area I am familiar with, but I would expect that yes, you probably did need to but the W10 licences to stay legal. @Superfly may be able to shed more light on this.
Yep, VL is governed by different rules - MAK's eg. are not up-gradable and need to be purchased new.

If the Win 7 PC's were OEM they could have been upgraded for free but the support will then be retail and domain etc issues not supported.