JacquesG

I think hazelnut and Tom Piriform , you are really of bad faith You should take some time to re-think about the definitions of product keys , serial key , product id , serial number ... You cannot be against all the rest of the world by only showing " serial key " in Speccy , which has a minor interest Regards

I entirerly agree with mta . Regards

OK , thanks to Tom Piriform and hazelnut for your patience If for re-installation , only product key is useful , I still do not understand why " Speccy " gives a " serial number " and no " product key " This makes everything very confusing

Ok In case I will have to re-install Win 10 on my machine from scratch , the key that will be necessary is the " serial key " ?

Thanks for your reply What is the serial key compared to the licence key ( called Product key by everybody ) What is the use of the serial key ? Nobody use this key ? ( all the softwares on the market talk of Product key ( what you call licence key ? ) Could you clarify this for everybody Thank you for your help Regards

Thank you very much for your reply 1) No, if we upgrade from Win 7 to Win 10 , the product key is not anymore the key of Win7 , but a new product key Win 10 2) It seems there is a generic windows 10 and a product key ( attached to the machine on which was made the upgrade ? ) The litterature on this subject is very confusing 3) I checked the key product with : - Belarc Advisor - winAsKey - Winfokey - Advanced Token Manager They all give the same Product Kei 4) Only Speccy gives a different value I am not very confident anymore in Speccy ( unless somebody explain me what gives Speccy ) Best Regards

Hello On my Desktop Computer I moved from Win 7 to Win 10 at the time it was free ( more than 1 year ago ) When I use Speccy to get the information on my Operating system , I get Windows 10 Professional , and installation date , but the " Product Key is wrong " ( tested with many other tools ) Is there an explanation ? Thanks for your help Regards