Thanks, I’ll try it…
Also found eventually we don’t need to use external tools, we can get the product key from command line:
Windows 10 came preinstalled on my computer, how do I find the product key?
Press Windows key + X
Click Command Prompt (admin)
Enter the following command:
wmic path SoftwareLicensingService get OA3xOriginalProductKey
Hit Enter
The product key will be revealed, copy the product key then enter it
Click Start > Settings > Update & security > Activation > Change the product key then enter the new product key then click Next to Activate
If you are unable to activate Windows 10 after all the above and you are certain you have the correct edition installed, then please attempt phone activation: