I am owner of W8.1. I have W10 technical preview installed. Now how to upgrade my license from W8.1 to W10 ? I tried to change my product key from W10 TP using my W8.1 but it was not accepted. What is the right way ?
no keys..just upgrade 8.1 with 10240 and you're done...UPGRADE it..then if you want you can do a clean install later.