Activation error

0xC004C007

Windows activation fails with this product key

Activation ended with 0xC004C007. Microsoft documents this code only inside an entry it shares with other codes. Possible reasons are a key that can't be used for activation, busy activation servers during an upgrade, or a reinstall after the free upgrade offer.

Symptoms

0xC004C007 appears when Windows tries to activate with your key
The Activation page reports that Windows is not activated

Causes

Windows can't be activated with the entered product key.
You upgraded to Windows 11 at a time when the activation servers were busy.
After the free upgrade offer, Windows 11 was reinstalled and has not activated again. Microsoft says it should activate automatically if the device had no significant hardware change, such as a new motherboard.

How to fix it

Make sure the right key is installed

In Settings > System > Activation (Windows 10: Settings > Update & Security > Activation), select Change product key. Copy the key from your order email or type it carefully, then select Next.

Try again later after an upgrade

If you upgraded from an activated Windows 7 or 8.1 while the activation servers were busy, Microsoft says Windows 11 will activate automatically. You can also wait and then select Activate.

Let us check the key

Microsoft's general advice for this group of errors includes entering a different product key. If your key came from Lizensa, contact our support with your order number first.

What Microsoft documents

We found no Microsoft article dedicated to 0xC004C007. In Get help with Windows activation errors it shares one row with other codes, among them 0xC004C004 and 0xC004F005. We do not add reasons that Microsoft does not name.

Our support will ask which edition is installed. If you are unsure, compare it with your order using Matching the edition to your key. For volume keys (MAK) on Windows 10, activation at the command line is shown in Volume key (MAK) and Enterprise editions.

When to contact Lizensa support

Reach our support with your order number and the exact message or a screenshot of the Activation page. Add the last five characters of the key you entered. Our support is available Monday to Friday, 09:00 to 17:00 CET.

Still need help?

If error 0xC004C007 keeps blocking activation after these steps, our support team can check your key and license channel directly.

Contact support

Genuine licenses

Genuine licenses that activate cleanly

Windows 10 Pro

€24.90

Windows 11 Pro

€29.90

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