

This paragraph does not apply to any EU customer. (Retail versions of Win10 may be transferable.) You can’t transfer it to a replacement system. But a Win10 OEM key is tied to the original PC - and only that machine*. These resellers, even I use one of them regularly offers only keys but many of them do not send you a COA.Īnother speculated “source” is abandoned Win10 systems. COA is a license -it has a key printed on it.


I hoped Microsoft would be more clear about this. They need Pro as a base license.Ī key, unfortunately, is no license. No even more: I meant this more general so especially for Home and ProĮnt / Edu cannot even be upgraded without a license. Karl notes that this does not include Enterprise versions, and goes on to say
