Article ID: 2649422 - View products that this article applies to.
Remote Desktop Services (RDS) are published on a Remote Desktop Gateway (RD Gateway) server that is running Windows Server 2008 R2 through Forefront Unified Access Gateway (UAG) in a network environment. Sometimes, external users cannot connect to the published RDS, and they receive the following error message:
Additionally, an event that resembles the following is logged on the RD Gateway server:
Your computer can't connect to the remote computer because the Remote Desktop Gateway server reached its maximum allowed connections. Try reconnecting later or contact your network administrator for assistance.
Event ID: 203
This issue occurs because user connections are not closed correctly. Therefore, some Forefront Network (Edge) tunnels are leaked. When the number of concurrent connections to the RD Gateway server has reached the maximum number, all new connection requests are denied.
Hotfix informationA 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 website:
http://support.microsoft.com/contactus/?ws=supportNote 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.
PrerequisitesTo apply this hotfix, you must be running Windows Server 2008 R2 or Windows Server 2008 R2 Service Pack 1 (SP1). Additionally, you must have the Remote Desktop Gateway role service enabled.
For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/976932/ )Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2
Registry informationTo apply the hotfix in this package, you do not have to make any changes to the registry.
Restart requirementYou do not have to restart the computer after you apply this hotfix. To avoid restarting, stop the Remote Desktop Gateway role service.
Hotfix replacement informationThis hotfix does not replace a previously released hotfix.
File informationThe global 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 R2 file information notes
For all supported x64-based versions of Windows Server 2008 R2
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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/824684/ )Description of the standard terminology that is used to describe Microsoft software updates
Additional file information
Additional file information for Windows Server 2008 R2
Additional files for all supported x64-based versions of Windows Server 2008 R2
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Article ID: 2649422 - Last Review: February 9, 2012 - Revision: 4.0