Option1
a quick way to activate windows 10 pro 64 bit
Open Command Line Interface
Open with admin privileges.
slmgr.vbs /ipk W269N-WFGWX-YVC9B-4J6C9-T83GX
slmgr.vbs /skms kms.lotro.cc
slmgr.vbs /ato
Windows 10 Proessional N Product Key:
MH37W-N47XK-V7XM9-C7227-GCQG9
Option2
Use these comnnad lines to activate windows
step1. cscript slmgr.vbs /upk
step2. cscript slmgr.vbs /ipk “Copy & Paste Product Key According To Your Edition”
step3. cscript slmgr.vbs /skms kms.lotro.cc
then after if need, u can run this commant after all
step4. cscript slmgr.vbs /ato