The Windows Activation error code 0xC004C003 occurs because users have recently Installed Windows 10 which led to the deletion of everything that was installed including the product key. Also it is quite possible that Windows servers are over loaded which have caused this error. So, users who have tried to update Windows 10 for Windows 8.1 and 7 users may face this error. The other reason is that it’s an Activation error which defines that the server has determined all keys to be invalid and is blocked. We have discussed methods to fix Windows activation error code 0xC004C003 with detailed description of each step
Methods to troubleshoot Windows Activation Error code 0xC004C003
Method 1: Reset the PC first
- Resetting the PC will help users overcome this issue faster
- Click on the “Start” button first and then, navigate to the “Settings” icon
- Hit on the “Update and Security” option now.
- Next, go to recovery section which is located just on the left Pane.
- Tap on the “Reset this PC Option” and then, click on the “Get Started” icon
- Now wait for a while until everything is over and watch out if this error still persists or not.
- If this method does not seems to be working out then, proceed to next step
Method 2: Install your Windows 7/8 and then, upgrade it
- Insert the Windows Installation CD/DVD first but make sure that you have its Product Key.
- Boot the PC with the help of DVD by simply changing the Boot Priority into BIOS mode.
- Read all the instructions carefully that are needed to install Windows 7 or 8/8.1.
- Make sure that the version of Windows which you have installed is well activated.
- Next, users are advised to download all available Updates so that they can view Windows 10 Notification in the tray.
- If this Notification is not visible to you then, one may need to download all needed updates
- Now Run the required tool and hit on the “Upgrade this PC” option so to download Windows
- Once you are done with the installation process, you should have Windows 10 and a copy of it which should be activated without any activation error as mentioned here.
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