Thanks Carl-L for your response , I sincerely appreciate this, I do regret that I failed to point out the essence of my question.
Will you give me a second chance to correct this. My question is only related to a Microsoft Software Product ; Microsoft Flight Simulator FSX - Gold Edition., one of the predessors of the present Microsoft Flight Simulator programs: MSFS2020 and MSFS2024 developed by Micrsoft and Asobo companies. FSX Gold was released somewhere after 2006 and was only available on 3 DVD's , 2 with the FSX DeLuxe program and 1 last DVD with the : Microsoft FSX Accelaration upgrade. The
required License Keys for the individual programs where included in the sealed DVD Box and never in any way vicible from the outside. You only got the code's after opening the box which normally could only happen if you paid for the product beforehand. To my knowledge and what I remember from 'back-then' the program or any Flight Simulator was never 'preinstalled' on a PC or Laptop during the manufacturing process. Possible the retailer/seller of the hardware may have installed the program on request of a client during the sale transaction. In my case my FSX Gold has allways been an independent product , only owned by myself, and installed consequative on 2 seperate PC 's through the years, allways removed/deleted completely from the previous PC before installing on my next PC. The program has never been installed on more than one PC, allways my own PC. Please may I point out that my question has no relation what so ever to any Operating System that my PC may run. One PC ran on Preinstalled EULA Windows OS, one PC ran on Official Original Watermarked WINDOWS DVD I purchased from the well-known dutch 'MyCom' computer hardware shops. I have been using existing previous iterations of Microsoft Flight Simulator (uptil MSFS2020) on every available OS including DOS right from 5 1/4" floppy days............ I did say that I was willing to pay a fair price for any reactivation of my FSX Gold, payment would off course be to an Official MIcrosoft account..... Again since I've complied to all EULA rules and regulations I should be able to reactivate my second and with that only Installment of the program. I would truly appreciate any advice or thought I from any person in the community. Thanks so much for yr effort and reply , with kind regards Peter B.