Error code 0xc0000003 when registering AppCheck Anti-Ransomware is caused by exceeding the number of licensed users.
In the case of individual purchase, please enter your email address and license key in the "Customer Support - License Management - License Check" menu on the Checkmal website to cancel registration if there are devices that exceed the number of licenses.
In the case of corporate purchase customers, request a list of registered devices for license initialization to support@checkmal.com, and check and send the deregistered devices in the Excel document received, and we will support initialization.