DOCUMENT:Q198893 04-AUG-2000 [winnt] TITLE :Effects of Checking "Use Network Name for Computer Name" in MSCS PRODUCT :Microsoft Windows NT PROD/VER:WINDOWS:2000; winnt:4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server, Enterprise Edition version 4.0 - Microsoft Cluster Server - Microsoft Windows 2000 Advanced Server ------------------------------------------------------------------------------- SUMMARY ======= Applications not specifically designed to run on Microsoft Cluster Server can become confused with regard to host names when set up as generic applications or services. This confusion can occur when the applications make calls by using the GetHostName() or GetComputerName() APIs. Typically, the application will fail with regard to the node name as opposed to the cluster name. MORE INFORMATION ================ Set the dependencies for the application to include only a dependency on the network name to which the application needs access. Under the parameters page, make sure that the "Use Network Name for Computer Name" check box is selected. Selecting this check box has the effect of setting the environment variable _CLUSTER_NETWORK_NAME_ for the context of the application. Calls to GetHostName() and GetComputerName() return the value of the variable as opposed to the host name of computer name of the node. NOTE: This variable is ALWAYS a user variable. Do not attempt to set it manually to be a system variable. Doing so can cause failures and, in extreme cases, the inability to log on. "Use Network Name for Computer Name" will be unavailable if multiple dependencies exist. Set the dependency, click to select the check box, and add other dependencies as needed. For additional information, please see the following article(s) in the Microsoft Knowledge Base: Q183832 GetHostName() Must Support Alternate Computer Names Additional query words: ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNT400xsearch kbwin2000AdvServ kbwin2000AdvServSearch kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400xsearch kbwin2000Search kbAudDeveloper kbClustServSearch kbWinAdvServSearch Version : WINDOWS:2000; winnt:4.0 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.