MAK Key | Windows License | OEM & Retail Keys [Oct 2022]

Last updated on October 1st, 2022

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MAK Key or Multiple Activation key is a tool used for software activation. It can activate any Microsoft product free using an emulated KMS Server.

MAK Key Windows License

There are two main types of Windows licenses.

  • Client Access License or CAL
  • Microsoft Windows Server License

Client Access License or CAL

This license is used along with Microsoft Windows Server software licenses.

CAL is used to grant access to MS Windows Server software.

And let the users utilize the products.

Client Access Licenses are also required for all users to have access to Windows Server.

For the Window Server 2016 Essentials edition, CALs are not required.

More users?

You will need more user Client Access Licenses.

More new devices?

You will need more device Client Access Licenses.

Types of Client Access Licenses or CALS

There are three types of CALS:

  • User Client Access Licenses
  • Device Client Access Licenses
  • Remote Desktop Service Client Access Licenses

User Client Access Licenses allow a single user to access Windows Server from an unlimited number of devices.

Device Client Access Licenses allow an unlimited number of users to access Windows Server from a single device.

Remote Desktop Service Client Access Licenses are required for users or devices that want to utilize Remote Desktop Services functionality on Window Server.

Windows Server License

This license allows users to download and install the operating system onto the server.

Windows Server license does not allow the users to connect to the server.

For this, each user or device must have a CAL.

MAK Key Infographics

Types of Windows License Keys

  • OEM (Original Equipment Manufacturer Key)
  • Retail Key
  • MAK Key

You have to use the same key for all the computers that are on the same network.

Read more about Microsoft KMS Activation.









Microsoft Office 2016 Activation Key





MAK Key Client Setup

You have your desktop clients and servers on a network.

And you already purchased a volume license from Microsoft.

Once you get the license.

You will use it to activate the KMS from one of the Microsoft Activation Servers.

First of all, you have to make sure that all of your desktops and servers are ready and connected to the same network.

Now you have to activate them.

Remote users with a Windows 7 VM or Windows 8 and 10 can activate their Virtual Box over the VPN tunnel.

But once every three months they have to be on the same VPN network.

Now that everything is in place.

We can run a script to force the activation, so this is a script for a Windows server 2016.

MAK Key Setup

The main thing is that you first activate the Key Management server with Microsoft and put non-activated computers on the same network.

If you already know your KMS network, you can move to a different network and reset your changes.

And then activate it on a different network.

But it is not that easy and practical.

So we run this license manager VBS script and set a KMS switch.

KMS is very very lightweight.

It is a small service that is installed on the DNS servers.

You can add it to a domain controller or the email server because it is very lightweight.

It doesn’t take up many resources at all.

It has to be something that everybody can connect to, all the time.

So adding it to an Active Directory Controller DNS server makes a lot of sense.


Here we will answer some frequently asked questions regarding Multiple Access Windows License Keys.

How do I get a MAK key?

There are two ways to get a MAK key. Go to the Product Keys section of the Volume Licensing Service Center (VLSC) and then Enterprise Agreements, and the Services Provider License Agreement (SPLA). You can call Microsoft Activation Centre for a MAK Key.

What is the MAK license type?

Just like KMS activation, MAK is also a windows license key.

What is the Office 2010 MAK key?

Office 2010 MAK key is a license key that is used to activate multiple installations of the MS Office 2010 edition.

Try KMSPico 1019 to activate any Windows edition.

Visit KMSPico to learn more about Windows and Office activators.

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