Windows 11 Pro Retail activation error 0xC004C060

Alpha Bah 20 Reputation points
2026-07-14T23:11:01.3+00:00

Hello,

I am trying to activate Windows 11 Pro using a Retail key, but the activation fails with error code 0xC004C060.

I went through the automated Microsoft contact system and provided my full Installation ID. However, the automated system then told me that the product key does not exist in their system.

I would appreciate if someone could look into this, as i need windows 11 pro for school.

Thank you.

Windows for home | Windows 11 | Licensing and activation
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Answer accepted by question author
EmilyS726 260.1K Reputation points Independent Advisor
2026-07-14T23:44:37.3033333+00:00

Hello

I need more information to narrow down please.

How did you obtain your license initially?

If you purchased it, did you purchase from Microsoft, or from third party?

Is it originally a Win7/8 key?

Just to make sure, is motherboard changed involved here? Is this a clean install, or a reinstall, or you are trying to upgrade from an already-activated Home edition?

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