I installed build 10240 and activated pro version trough kms server
 I had a validity for 6 months
 but I can just the extend the validity by using KMSpico app which is used to activate windows
I installed build 10240 and activated pro version trough kms server
 I had a validity for 6 months
 but I can just the extend the validity by using KMSpico app which is used to activate windows