A Microsoft Windows Server 2003-based server that has Terminal Server enabled and that is located in a forest cannot obtain a license from a Terminal Server license server that is located in a different forest when those forests are connected by an external trust.

Note External trusts only support NTLM authentication. External trusts are also known as "down-level trusts" or "Microsoft Windows NT Server 4.0 trusts."

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This problem occurs because Terminal Server cannot obtain a license when NTLM is used for authentication.

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Service pack information

To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. 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.

Prerequisites

No prerequisites are required.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

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.

Windows Server 2003, 32-bit x86-based versions

File name	File version	File size	Date	Time	Platform
Mstlsapi.dll	5.2.3790.385	106,496	10-Aug-2005	03:02	x86

Windows Server 2003, 32-bit x86-based versions with Service Pack 1

File name	File version	File size	Date	Time	Platform
Mstlsapi.dll	5.2.3790.2505	118,272	10-Aug-2005	03:13	x86

Windows Server 2003, 64-bit Itanium-based versions

File name	File version	File size	Date	Time	Platform	Service branch
Mstlsapi.dll	5.2.3790.385	316,416	09-Aug-2005	13:09	IA-64	Not Applicable
Wmstlsapi.dll	5.2.3790.385	106,496	09-Aug-2005	13:09	x86	WOW

Windows Server 2003, 64-bit Itanium-based versions with Service Pack 1

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Mstlsapi.dll	5.2.3790.2505	347,648	09-Aug-2005	13:09	IA-64	SP1	Not Applicable
Wmstlsapi.dll	5.2.3790.2505	118,272	09-Aug-2005	13:09	x86	SP1	WOW

Windows Server 2003, 64-bit x64-based versions

File name	File version	File size	Date	Time	Platform	SP requirement	Service branch
Mstlsapi.dll	5.2.3790.2505	190,976	09-Aug-2005	13:09	x64	SP1	Not Applicable
Wmstlsapi.dll	5.2.3790.2505	118,272	09-Aug-2005	13:09	x86	SP1	WOW

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To work around this problem, use either of the following methods.

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Method 1

Install a Terminal Server license server in the same domain or forest as the Terminal Server that is requesting the license.

For more information about license server roles, visit the following Microsoft Web site:For more information about where to install license servers for each role, visit the following Microsoft Web site:

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Method 2

Create a forest trust that supports Kerberos authentication between the two forests.

For more information about forest trusts, visit the following Microsoft Web site:

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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Server 2003 Service Pack 2.

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

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