Windows 10 Pro

I have bought my laptop with Windows 8 Home upgraded to Pro edition, but I haven't got upgrade key from a shop (or it was hidden in the receipt and I forgot where the receipt was). Years have passed, Windows was upgraded to Windows 10 and then Visual Studio stopped working. I have fought bravely, to avoid Windows reinstallation, but MS help said that it was the only way to fix Visual Studio. Reluctantly, I have reinstalled Windows with the help of Media Creation Tool. Then, my Windows was reverted to Home edition and lost the ability to execute virtual machines! Few days with Google lead me to the page with a solution, and I have learned that:

If you performed a clean install using the Media Creation Tool it installs the specific edition based on the OEM Marker in the BIOS. So if the computer originally came preinstalled with Windows 7 Starter, Home Basic, Home Premium or Windows 8/8.1 Core/Single Language Windows 10 Home will be installed.

Workaround:
Upgrade to Windows 10 Pro using the following default product key:

VK7JG-NPHTM-C97JM-9MPGT-3V66T

So, if You bought PC with Home edition of Windows and have upgraded it to Pro version after Windows reinstallation, You should use key VK7JG-NPHTM-C97JM-9MPGT-3V66T!