Cannot set a fixed endpoint for a COM+ application (312960)
The information in this article applies to:
- Microsoft COM+ 1.5, when used with:
- the operating system: Microsoft Windows XP
- Microsoft COM+ 1.0, when used with:
- the operating system: Microsoft Windows 2000
This article was previously published under Q312960 Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base: 256986 Description of the Microsoft Windows registry SYMPTOMSIn the Distributed Component Object Model (DCOM), you use a
fixed endpoint (a static port) to listen to client remote procedure calls.
However, this functionality is not available to Microsoft COM+ applications.
Typically, functionality is used to limit the ports that are opened through a firewall.
You can call the RpcServerUseProtseqEp function to fix the Transmission Control Protocol (TCP) port on
which the COM+ application listens for the COM Object Remote Procedure Call (ORPC).
However, you cannot specify a particular port for the application to use manually.RESOLUTIONMicrosoft Windows 2000
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to obtain the latest Windows 2000 service pack
The resolution for this problem is also included
in Microsoft COM+ Hotfix Rollup 18.1.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
313582
Availability of Windows 2000 Post-Service Pack 2 COM+ hotfix rollup package 18.1
Microsoft Windows XPTo resolve this problem, obtain Microsoft Windows XP COM+ Hotfix Rollup Package 9.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
895200
Availability of Windows XP COM+ Hotfix Rollup Package 9
Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk. After you install the appropriate COM+ hotfix rollup, follow these steps to add the required registry entry:
- Obtain the Application ID of the COM+ application from the
COM+ catalog. To locate the Application ID, refer to the application properties
in COM+ Explorer.
- Start Registry Editor.
- Locate and then click the following key in the registry:
- On the Edit menu, click Add Value, and then add the following registry value:
Key name: GUID
Value name: Endpoints
Data type: REG_MULTI_SZ
Value data: ncacn_ip_tcp,0,port
number - GUID is the Application ID of the COM+ application
that you obtained in step 1.
- The port number that you specify in Value
data must exceed 1024 and must not conflict with well-known
ports that other applications on this computer use.
- You cannot modify the ncacn_ip_tcp,0 part of this
key.
- Quit Registry Editor.
STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
| Modification Type: | Major | Last Reviewed: | 4/5/2005 |
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| Keywords: | kbbug kbDCOM kbfix kbSecurity kbWin2000PreSP3Fix kbWin2000sp3fix KB312960 kbAudDeveloper |
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