If your product key is not working, there are various solutions depending on the product. Please first check the following notes.
Issues with Windows 10 Pro or Windows 11 Pro
Please ensure that the Pro version is already installed on your device.
For this, please refer to the following guide:
Upgrade
If you have purchased a Windows 10 Pro or Windows 11 Pro key but are currently using the Home version, you must first perform the upgrade from Home to Pro.
Please use our upgrade guide and only enter your purchased product key after successfully restarting your computer.
Possible Error Messages
If activation still does not work, one of the following error codes may be the cause:
ERROR CODE 0xc004f050
ERROR CODE 0xc004C060
ERROR CODE 0xc004003
ERROR CODE 0xc004008
You can find a suitable solution for these error codes in our help section.
Issues with Microsoft Office
If the online activation of your Office product fails, you can alternatively use the phone activation.
Step 1
Click on “Back” in the activation window and then select “Activate by Phone”.
Step 2
Select your country or region and call the displayed toll-free number.
Then follow the instructions of Microsoft's automated activation service.
If Activation Still Does Not Work
If phone activation also does not succeed, please contact our support.
You can reach us:
Email: support@it-nerd24.co.uk
Toll-Free Hotline: 0800 000 81 24
Live-Chat: Directly on our website
You can also send us the displayed installation ID. We will assist you in determining the appropriate confirmation ID.
Issues with Other Products
If you encounter difficulties with another software product, we are of course happy to assist you as well.
Simply contact our support via email, phone, or through the live chat on our website.
Our team will review your request as quickly as possible and work with you to find a solution.