08 Aug
![How to Activate Windows 10 by Phone How to Activate Windows 10 by Phone](https://bitnetkeys.com/image/cache/catalog/you-cannot-activate-Windows-10-after-july-29-1060x400w.png)
![How to Activate Windows 10 by Phone How to Activate Windows 10 by Phone](https://bitnetkeys.com/image/cache/catalog/you-cannot-activate-Windows-10-after-july-29-1060x400w.png)
To activate Microsoft Windows by Phone method, follow the guide below:
1 - To enter/change your product key within Windows 10, follow the screenshot below.
(Start > Settings > Update & Security > Activation > Change product key)
(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".
![](https://bitnetkeys.com/image/catalog/w22.png)
3 - After entering the product key, you will receive the following error code 0x803F7001.
![](https://bitnetkeys.com/image/catalog/w33.png)
4 - Press Windows logo key + R key to open Run, then type: SLUI 4, then click OK. (Note that there is a gap between SLUI and 4).
5 - Select your country or region, then click Next.
5 - An Installation ID will be generated. (In our example we got 9 groups of 7 numbers).
![](https://bitnetkeys.com/image/catalog/w66.png)
7 - Go to https://bitnetkeys.com/CID
8 - Enter the Installation ID and click "Get Confirmation ID".
9 - You well get the Confirmation ID.
![](https://bitnetkeys.com/image/catalog/w88.png)
10 - After obtaining the confirmation ID (CID). Click "Enter Confirmation ID" in the activation pop-up window.
11 - Copy and past it group by group in the activation pop-up window Then, click "Activate Windows".
![](https://bitnetkeys.com/image/catalog/w99.png)
10 - If your product key is valid and the numbers have been entered correctly, You're done, Windows is successfully activated.
![](https://bitnetkeys.com/image/catalog/w1010.png)