Take help with these steps to solve the issue:
1. Run command prompts as administrator
2. Execute the command and press the enter button at the end of each line.
· slmgr /ipk VK7JG-NPHTM-C97JM-9MPGT-XXXXX
· slmgr /skms kms.xspace.in
· slmgr /ato
3. Press Windows + R key to invoke run dialog box and type “slmgr.vbs-spr” to check whether your Windows 10 is activated or not.
That’s it now you’re activating Windows 10 without Product Key for using.
Read More: How to Activate Windows 10?