Instructions For Activate The Windows 8.1 Pro by Phone :
1) Select the Start button, enter PC settings, and then select PC settings from the list of results.
2) Select Activate Windows, and then select Contact customer support for help.
3) You may be asked for an admin password or to confirm your choice.
4) Select your location from the drop-down list, and then select “Next”.
5) Then you will see Installation ID which is 63-digit numbers.
Now you can get your Confirmation ID by entering your 63-digit Installation ID in the tool above, together with your order number, order email, and selected product type from HERE.
Or you can get your Confirmation ID by dialing this 63-digit Installation ID by calling one of the numbers you see on the same screen and following the instructions of the answering machine. Please note that, in order to get your Confirmation ID without any problems you need to press 0 when it asks how many computers you have installed on.
If you’re not able to get your Confirmation ID by calling please send us a Ticket from HERE by sending your Installation ID so we can help you to complete your activation.
6) After receiving your Confirmation ID, you can enter your Confirmation ID, and your product will be activated.
If you need Windows 8.1 Pro product key you can purchase from HERE with best price!