1 – To enter/change your product key within Windows 10/11 follow the screenshot below.      (Start  > Settings  > Update & Security > Activation > Change product key)

2 – You will be prompted to enter product key. Enter your product key purchased. Then, click “Next”.

3 – After entering the product key, you will receive the following error code like 0x803F7001.

4 – ✅ Now click “Close” button!, Find & Click “Activate by phone”

5. After Click “Activate by phone” and select country “India” And Click Next

6. Than send me that screenshot 💻 of your installation id.
👉 to get Confirmation ID

7. After you will get 👉 Confirmation ID ✅ Now click “Enter Confirmation ID” and put this ID 👇 then click 👉 “activate windows button”

8. If your product key is valid and the numbers have been entered correctly, You’re done, Windows is successfully activated.