While the error can be frustrating, we will guide you toward resolving the error 0xC004C020 while trying to activate Windows on organization-linked computers.

What causes the error 0xC004C020?

If you are trying to activate Windows on your organization-linked computer and encounter the error 0xC004C020, then the possible causes could be as follows:

Non-MAK key – If a non-MAK key is used on an organization-linked computer, then the organization’s policy will not allow its activation. Key access lost after formatting – Multiple Activation Keys can be used only once. If the computer is formatted, you cannot repeat the key by yourself. Wrong activation key – It could be possible for the activation key to be incorrect. This has to be verified with the system administrator. MAK key usage limit crossed – Windows keys used by organizations have a limit on the number of systems on which they can be used. If this limit is exceeded, the key won’t work.

Now that we know the reasons behind the problem, let us try to fix it.

How do I fix the 0xC004C020 activation error on Windows?

Before proceeding with the troubleshooting involving your organization, you could try a few quick solutions:

Re-check the key you are typing and make sure it is correct. Make sure your computer is connected to the organization’s network. Restart your computer. Contact the IT Server Administrator.

If the preliminary solutions were not helpful, please proceed with the following solutions sequentially.

1. Activate Windows using Command Prompt

Windows systems should pick the activation key automatically, but if it doesn’t, the Command Prompt method can be helpful.

2. Run the Windows Activation troubleshooter

3. Activate Windows through phone

These solutions should help you fix the activation error, but if not, you can always contact Microsoft support. Feel free to check our generic guide on solving general Windows activation issues. If your problem persists, please let us know in the comment section. We will check for further solutions.

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