Activation of Windows 7 0xC004C020 error

I have a genuine Windows 7 product key that I used several times on the same computer, whenever I have to reinstall Windows 7. In every installation, activation could be done successfully. But this time after reinstalling windows, I tried to activate Windows 7 but activation failed!

Code:
0xC004C020

Description:
The activation server reported that the multiple activation key has exceeded its limit.

Help me to understand and solve this problem?

Hello

Adding suggestions from Ron and Andre Da Costa.

See How to solve the codes error Activation Volume Windows 7, Windows Server 2008 and on Windows Vista computers

Gokul - Microsoft Support

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Tags: Windows

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