Here’s how to Fix The product key you entered didn’t work 0xc0020036 while activating Windows 10.

The error message /”The product key you entered didn’t work 0xc0020036 while activating Windows/” can occur for a variety of reasons, including:

* The product key you entered is invalid.
* The product key you entered is for a different version of Windows than the one you are trying to activate.
* The product key you entered has already been used to activate another copy of Windows.
* There is a problem with the Windows activation servers.

To try to fix this error, you can try the following:

1. Make sure that you are entering the product key correctly. The product key is a 25-character code that is typically included on a sticker that comes with your computer or on a card that comes with your copy of Windows.
2. Try entering the product key in a different way. For example, if you are entering the product key manually, try copying and pasting it from a text file.
3. Try activating Windows by phone. To do this, open the Settings app and go to Update & Security – Activation. Click on the /”Troubleshoot/” button and then click on the /”I’m having trouble activating Windows/” link. Click on the /”Activate by phone/” option and follow the instructions on the screen.
4. If you are still having problems, you can try contacting Microsoft support for assistance.

Here are some additional tips:

* Make sure that you are using the product key for the correct version of Windows. For example, if you are trying to activate Windows 11, make sure that you are using a product key for Windows 11.
* If you are using a volume license product key, make sure that you are activating Windows on a computer that is authorized to use that product key.
* If you are activating Windows on a used computer, make sure that the previous owner has deactivated Windows.

i. Here are some common error codes that can occur when activating Windows:

* **0x80070005** – Access denied. This error code can occur if you do not have the necessary permissions to activate Windows.
* **0x8007007B** – DNS name does not exist. This error code can occur if the DNS server cannot find the Windows activation server.
* **0x80070490** – The product key you entered did not work. This error code can occur if the product key you entered is invalid, has already been used, or is for a different version of Windows.
* **0x800706BA** – The RPC server is unavailable. This error code can occur if the RPC server that is used to activate Windows is unavailable.
* **0xC004B100** – The activation server determined that the computer couldn’t be activated. This error code can occur for a variety of reasons, such as if the computer is not connected to the internet or if the Windows activation servers are experiencing problems.

If you are experiencing any of these error codes, there are a few things you can try:

* Make sure that you are entering the product key correctly.
* Make sure that your computer has a stable internet connection.
* Try restarting your computer.
* Try running the Windows Activation Troubleshooter. To do this, open the Settings app and go to Update & Security – Activation. Click on the /”Troubleshoot/” button.
* If you are still having problems, you can try contacting Microsoft support for assistance.

Here are some additional tips:

* If you are using a volume license product key, make sure that you are activating Windows on a computer that is authorized to use that product key.
* If you are activating Windows on a used computer, make sure that the previous owner has deactivated Windows.
* Try activating Windows by phone. To do this, open the Settings app and go to Update & Security – Activation. Click on the /”Troubleshoot/” button and then click on the /”I’m having trouble activating Windows/” link. Click on the /”Activate by phone/” option and follow the instructions on the screen.

Please take the opportunity to connect and share this video with your friends and family if you find it useful.