Single CALs support is available for Terminal Server license servers that are running Windows Server 2008

Applies to: Windows Server 2008 DatacenterWindows Server 2008 EnterpriseWindows Server 2008 Standard


Currently, Terminal Server client access licenses (CALs) are sold in packs of 5 or 20. If you want a certain number of CALs that is not divisible by either pack quantity, you must purchase the next larger quantity that is available. For example, if you want 6 CALs, you must purchase 10 CALs.


A hotfix is available to resolve this issue. This hotfix provides single CALs support for Terminal Server license servers that are running Windows Server 2008. With single CALs, you can buy as many CALs as required, and then you can install them on your license servers.

The following four kinds of single CAL packs are now available:
  • Per User
  • Per Device
  • Per User AE (Academic Edition)
  • Per Device AE (Academic Edition)

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem is that described in this article. Apply this hotfix only to systems that are experiencing the problem is described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.


To apply this hotfix, your license server must be running one of the following operating systems:
  • Windows Server 2008
  • Windows Server 2008 Service Pack (SP2)

Restart requirement

You must restart the computer after you apply this hotfix.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
For all supported x86-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatformSP requirement
Lserver_pkconfig.xmlNot Applicable20,10212-May-200910:45Not ApplicableSP1
Lserver_pkconfig.xmlNot Applicable20,10212-May-200910:48Not ApplicableSP2
For all supported x64-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatformSP requirement
Lserver_pkconfig.xmlNot Applicable20,10212-May-200910:46Not ApplicableSP1
Lserver_pkconfig.xmlNot Applicable20,10212-May-200910:50Not ApplicableSP2


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates