MAS activation may show the error related to "Incorrect ModuleId". Some gaming spoofers mess with Windows activation-related registry keys and because of that windows can not be activated. To fix this, you just need to restore that corrupt registry key with default data.
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Download and run this registry file, and confirm all prompts.
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Restart your system.
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Run the activation in MAS and if the issue is still not resolved, connect with us here.