You cannot connect to a terminal server that is running Windows Server 2008 through the TS Gateway by using its FQDN if it is in a disjointed namespace and if the TCP port 445 is disabled between the terminal server and the TS Gateway

Consider the following scenario:

• You use the Terminal Services Gateway (TS Gateway) role service on a computer that is running Windows Server 2008. You allow the authorized remote users to use the TS Gateway to connect to the terminal servers in your internal corporate network or in your private network.
• You use Active Directory security groups to control user rights in Terminal Services resource authorization policy ("TS RAP" policy).
• A terminal server and the TS Gateway are in different domains or in a disjoint namespace.
• You disable communication to the TCP port 445 on the terminal server or on the firewall.

In this scenario, you still cannot connect to the terminal server through the TS Gateway by using the fully qualified domain name (FQDN) of the terminal server after you install the hotfix 967933. Additionally, you receive an error message that resembles the following:

After you install hotfix 976933, you can connect to terminal servers in the disjoined namespace through the TS Gateway by using their FQDN name. However, this hotfix introduces an additional requirement to create a connection. This requirement is that the TCP port 445 must be enabled between the terminal servers and the TS Gateway. Therefore, the error occurs when the TCP port 445 is disabled between the terminal servers and the TS Gateway.

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 the problem 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.

Prerequisites

To apply this hotfix, your computer must be running Windows Server 2008 or Windows Server 2008 Service Pack 2 (SP2). The TS Gateway role service must be installed.

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix replaces the previously released hotfix 967933

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Server 2008 file information notes

• The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

  Version	Product	SR_Level	Service branch
  6.0.600 1 . 22xxx	Windows Server 2008	SP1	LDR
  6.0.600 2 . 22xxx	Windows Server 2008	SP2	LDR

• Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxxx version number.
• The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Server 2008

For all supported x64-based versions of Windows Server 2008

Workaround for Windows Server 2008

To work around the issue, use one of the following methods:

• Use the NetBIOS name of the terminal server to create the terminal server sessions.
• Use the TS Gateway managed groups instead of Active Directory security groups to configure Terminal Services resource authorization policy ("TS RAP" policy).

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

When port 445 is blocked on TS, RAP checks for a resource whose domain NetBIOS of TS is not a correct prefix of its domain FQDN. The checking process takes around 30-40 seconds to complete and then the following result occurs:

• The checking process fails if this hotfix is not installed and the hotfix 967933 is installed.
• The checking process succeeds if this hotfix is installed.

Note Port 445 is for file and printer sharing.

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

Additional file information

Additional file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008

Additional files for all supported x64-based versions of Windows Server 2008