Activate MS products via Phone / MAK Keys Limit Exceed

This KB is helpful for the Activation of MS Products over the phone.

Usually when we come across an error as below:

“Error: 0xC004C020 The activation server reported that the Multiple Activation Key has exceeded its limit”

Call Microsoft Product Activation Center at [phone] or

For a list of other phone numbers please refer to MS Link below.

https://support.microsoft.com/en-us/kb/950929

Press Windows + R, type slui4.exe, and hit Enter on the deactivated server.

Follow the automated instructions and, when prompted, provide the 63-digit Installation ID.

Enter the confirmation ID provided by the phone activation system, and then click Activate.

MS Article that covers the topic:

Activate a Device Using Telephone Activation (Standard 8) | Microsoft Learn