How can a Windows domain user account on a specific device be deactivated?

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To deactivate a Windows domain user account on a specific device, follow these steps:

1. Log in to the device with admin privileges.
2. Open the Control Panel.
3. Click on the User Accounts option.
4. Select the User Accounts option again.
5. Click on the Manage another account option.
6. Select the user account that you want to deactivate.
7. Click on the Change the account type option.
8. Select the Standard User option.
9. Click on the Change Account Type button.
10. Close the User Accounts window.

By changing the account type to Standard User, the user will no longer have administrative privileges on the device. If you want to completely deactivate the account, you will need to delete it from Active Directory.