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Source: How to Fix Windows 10 Activation Error Code 0xC004C008

Windows is undoubtedly an efficient OS, but its productivity increases several folds when it is activated. The activation process is simple, as you merely need to redeem your 15-digit activation code on the setup menu. However, there are instances when you might be faced with the error code 0xC004C008. This error code mainly occurs when you install any Windows product several times, as the Windows license only allows to connect a single device.

If your operating system is crashed and you have bought a new device, then you need to install new Windows, change your hardware, and a new activation code. In this article, we will teach you how you can fix Windows 10 Activation Error Code 0xC004C008 with three methods.

Windows 10 Activation Error Code 0xC004C008

Using Phone Activation

Using Windows Activation

Contact Microsoft

1) Using Phone Activation

Here are the steps on how to use phone activation to fix windows 10 activation error code 0xC004C008:

Tap and hold Windows + R key to launch Run Windows, (You can also use start option top run Windows in Windows 10 operating system).
Type SLUI 4 command in the Run Windows.
Tap Enter key on your keyboard.
Here you can see a “Phone Activation Window” on the front of your screen.
In this Window, you have to select the country in which you are enrolled.
Make a call on the activation number when you have selected the country code.
After this, you can see a notification on your screen that asks you to enter your Installation ID.
1. Remember that you need to enter the installation ID into your phone.
After entering the installation ID, you can be asked how many windows licensed to install on your device, and you need to select 1.
If you select any other option, then it is not work in your device.
1. Remember that option 1 select means you can use it once only.
After the above process, you get the confirmation ID then you can ready to go along with the workable product key.

2) Using Windows Activation

Here are the steps on how to using Windows activation to fix windows 10 activation error code 0xC004C008:

Tap Windows + I key to launch windows settings.
Go to bottom and search Updates and Security option and then tap on it.
Start Activation option.
Tab on the troubleshooting features, and then you need to wait for a couple of minutes until the process complete.
Check the issue is resolved.

3) Contact Microsoft

If the above methods cannot fix your operating system, then you need to contact the developer. You need to dial toll-free number 18009365700 to talk to Microsoft and explain the error you have facing on your device.

Daniel Ryan is a Norton product expert and has been working in the technology industry since 2002. As a technical expert, Daniel has written technical blogs, manuals, white papers, and reviews for many websites such as norton.com/setup.