Client Access Licenses (CALs)
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Q. What is the difference between a Windows Server 2008 R2 license and a Windows Server 2008 CAL? Why do I need both?
A.
The Windows Server 2008 R2 license gives the license holder the right to create copies, store, and run the server software. The Windows Server 2008 CAL grants the right for a device or user to access the server software. The two-component license provides a low entry price and a way to pay for capacity used: the more devices or users accessing the server software, the greater the license fees or price. The model therefore offers license affordability to organizations of all sizes.
Q. When do I need to acquire a Windows Server 2008 CAL?
A.
A Windows Server 2008 CAL is required when a user or device accesses or uses the Windows Server 2008 server software. However, if access is through the Internet and is anonymous (for example, when browsing a public Web site), a Windows Server CAL is not required. Also, if that user is an external user, another option is to acquire an External Connector license. See the Windows External Connector License section below for more detail. Further information is available at the External Connector License Overview. Further to this Windows Server 2008 CALs are not required if you are using Windows Server 2008 R2 solely as a virtualization host. The only exception to this is if you are running Windows Server 2008 R2 virtual machines, which would require Windows Server 2008 CALs. For example if you deploy Windows Server 2008 virtual machines onto Windows Server 2008 R2, you do not require Windows Server 2008 CALs for your virtual machine users.
Q. If a user is only infrequently accessing certain protocols or services of the server software (such as Network Access Protection or Dynamic Host Configuration Protocol), is a Windows Server CAL still required?
A.
Yes, a Windows Server CAL is required for any such infrequent use/access of the server software.
Q. Are there any differences between the requirements for CALs in Windows Server 2003 versus Windows Server 2008?
A.
No. The Windows Server CAL requirements are the same.
Q. What is the difference between a Windows Server CAL and a Remote Desktop Services (RDS) CAL?
A.
A Windows Server CAL is required when a user or device is directly or indirectly accessing a Windows server. Additionally, if the user or device is accessing or using the terminal services functionality of Windows Server, a RDS CAL is also required. As an exception to these rules, up to two users or devices may access the server software only for server administration purposes, without requiring either a RDS CAL or Windows Server CAL.
Q. Can I use my WS 2008 TS CALs to access the new RDS functionality of Windows Server 2008 R2?
A.
Yes. Windows Server 2008 TS CALs are functionally equivalent to RDS CALs, and can be used for connecting to Windows Server 2008 R2 Session Hosts and RD Virtualization Hosts. A Windows Server 2008 R2 RD License server can issue and track both TS CALs and RDS CALs, but a Windows Server 2008 TS Licensing server needs to be running either Service Pack 2 or have the QFE described in Microsoft KnowledgeBase article 968074 installed to be able to manage RDS CALs.
Q. What is the difference between a Device CAL and a User CAL?
A.
A Windows Server Device CAL permits one device (used by any user) to access or use the server software. A Windows Server User CAL permits one user (using any device) to access or use the server software; the same holds true for RDS Device CALs and RDS User CALs.
Q. Can I use a Windows Device CAL and a Windows User CAL on the same server?
A.
Yes. Windows Device and User CALs can be used on the same server. For ease of management and tracking, though, Microsoft recommends that customers choose to acquire CALs on either a device or user basis.
Q. Can I use a Remote Desktop Services Device CAL (RDS Device CAL) and a Remote Desktop Services User CAL (RDS User CAL) on the same Remote Desktop Session Host server?
A.
Yes. RDS Device and User CALs can be used to access the same server; however the server can only be set in per user mode or per device mode. If you wish to use a mix of both per device AND per user CALs you will need to set your server in per user mode. For ease of management and tracking, though, Microsoft recommends that customers choose to acquire CALs on either a device or user basis.
Q. Is there a difference in price between Device CALs and User CALs?
A.
No. Windows Server 2008 Device CALs and Windows Server 2008 User CALs are priced the same, just as Windows Server 2008 RDS Device CALs and Windows Server 2008 RDS User CALs are the same price.
Q. My Windows Server 2008 software came with a set number of CALs because I acquired it through a retail store or with a new piece of hardware. How do I designate those CALs to be User or Device CALs?
A.
When the software comes packaged with CALs, you choose whether those CALs are User or Device CALs after you make the purchase on the CAL End User License Agreement document. In other words, you choose the type of CAL once you get the product.
Q. What is the difference between "types" of CALs and "licensing modes" for CALs?
A.
The different types of CALs are outlined above. See Device and User CALs. Different licensing modes only apply to Windows Server CALs and pertain to how to assign the Windows Server CALs.
In Per Server mode, the Windows Server CALs acquired should equal the total number of users and/or devices accessing that server's software at a given time. For example, in this mode, the maximum concurrent connections are equal to the number of Windows Server CALs acquired.
In Per Device or Per User mode, Windows Server CALs should be acquired for each device or user, in order for that device or user to access all the servers deployed in this mode. There is no limit to the number of devices or users accessing a server at a given time.
Please visit the CAL overview page for further details.
Q. What impact will User CALs have on Core CALs and Enterprise Agreements?
A.
Customers will be able to choose either Core Device CALs or Core User CALs for their Enterprise Agreement (EA) enrollments. By standardizing at an enrollment level, Microsoft can help maintain the simplicity and ease of tracking provided by the Core CAL and EA.
Q. Can I downgrade a RDS CAL for use on a Windows 2008 terminal server?
A.
Yes. You may downgrade Windows Server 2008 RDS CALs (either user or device), but a Windows Server 2008 TS Licensing server needs to be running either Service Pack 2 or have the QFE described in Microsoft Knowledge Base article 968074 (http://support.microsoft.com/kb/968074) installed to be able to manage RDS CALs.
Q. How do I designate Windows Server 2008 RDS User or Device CALs?
A.
During setup, Remote Desktop Server Licensing Management (RDSLM) will prompt you to choose.
Q. I have valid upgrade coverage with Software Assurance on my CALs. Can I choose either User or Device CALs? How do I do that?
A.
Yes. You must designate your Windows CALs as Device or User when you upgrade them. If you exercise your one-time right to convert Device CALs to User CALs mid-contract, you simply record the change for your records. When Software Assurance comes up for renewal, all the new specifications (for example, number of User CALs, number of Device CALs) are documented and revised in Microsoft Volume License Services' records. For RDS CALs, when you request RDS CAL tokens through Remote Desktop Licensing Manager, you are prompted to specify User or Device.
Q. Will I be allowed to switch between Windows Device CALs and Windows User CALs? What about RDS CALs?
A.
Customers with current Software Assurance for CALs may switch their Device CALs to User CALs and User CAL to Device CALs upon renewal of their Software Assurance coverage for those CALs.