Windows Server 2019 Essential - The product key entered does not work

jackrm85 1 Reputation point
2021-03-03T09:13:39.817+00:00

Hi, I created a VM and installed windows server 2019 Essentials Evaluation and after 3 months I decided to buy the original license (OEM).
Activation fails and generates an error message:
The product key entered does not work. Check it and try again or enter a different one (0xc0020036)
From cmd, it reports Error 87, Invalid Product Code KEy.
I tried these commands:
slmgr -ipk <KEY>
(0xc0020036) On a computer running a non-core edition of Microsft windows, run slui 0x02 0xC0020036 to view the error text. If I run the command it tells me "No Endpoint available in the endpoint mapping"

I tried to do these procedures but without success:

sfc / scannow
dism / online / cleanup-image / restorehealth

Windows Server 2019 Essential is not a Domain Controller, there are no Antivirus and the only firewall is the Defender that I have also tried to disable.

What can I do to activate the license?

Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
3,457 questions

3 answers

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  1. Dave Patrick 426.1K Reputation points MVP
    2021-03-03T13:21:36.023+00:00

    Might also try phone activation
    slui 4

    --please don't forget to Accept as answer if the reply is helpful--

  2. Dave Patrick 426.1K Reputation points MVP
    2021-03-03T13:43:17.257+00:00

    no more endpoints available from the endpoint mapper

    this occurs when some process that uses dynamics points is called repeatedly and never completes. It consumes all the dynamic ports

    netstat -aon
    should show this. As a work around try rebooting.

    --please don't forget to Accept as answer if the reply is helpful--

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  3. Jenny Feng 14,076 Reputation points
    2021-03-04T02:24:48.903+00:00

    @jackrm85
    Hi,

    This error 0xc0020036 may be caused by the incorrect license key.

    You can choose to adjust the value of sppsv in the registry editor.
    Note: Make sure that you back up the registry you modify it.

    Now, here is the tutorial.
    Press Windows key and R key together to open Run dialog.
    Type regedit in the box and click OK to continue.
    Then navigate to the following path: Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sppsvc
    On the right panel, choose Start key and double-click it.
    Then change its value data to 2 and check the option Hexadecimal.
    When it is finished, reboot your computer and check whether the error code 0xc0020036 is removed.

    Also, since this is a technical community and not a licensing one, if you need a definite answer you'd better contact your reseller or a trained Microsoft licensing specialist regarding your licensing questions.

    Please contact the Microsoft Activation Center.

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