Key Management Service (KMS) Customers will receive a KMS key on VLSC for each product grouping, corresponding to the products that they are entitled to per their Volume License agreement. If a customer is entitled to all Windows operating systems, the VLSC user could see eight Windows KMS keys (four for the current versions and four for the previous release). The following screenshot shows VLSC for an internal Microsoft organization. Note that the key and organizational info has been blocked out to preserve confidential data.
Multiple Activation Key (MAK) The MAK keys are not automatically found in the Existing Keys section on the VLSC. Instead, the VLSC users need to request the MAK that they need by going to the New MAK Keys tab, which is found by hovering over the Product Keys page header. Once a MAK is requested it will appear on the Existing Keys web page along with all other Volume License product keys. Customers can request MAK keys on VLSC for each product grouping, corresponding to the products that they are entitled to per their Volume License agreement. The following screenshot shows VLSC for an internal Microsoft organization. Note that the key and organizational info has been blocked out to preserve confidential data.”