Hi,
You can unlink your PC from your Microsoft account via the link below:
https://account.microsoft.com/devices?fref=home.drawers.devices.manage-devices
Then, run the command dsregcmd /leave in the command prompt.
Restart your PC, open the command prompt, and run the following command:
reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform\ESU"
If the result shows "ESU Eligibility" as 1, it means the ESU configuration has been removed.
Please consider rating this response (by accepting the answer or otherwise) and visiting the Microsoft Q&A community if you have any further questions.
Thanks.