ODBC Error After Multiple Connections and Disconnections

 Last reviewed: November 26, 1997
Article ID: Q154496
The information in this article applies to:
  • Microsoft Windows 95

SYMPTOMS

When you are running ODBC applications using Microsoft ODBC drivers, you may receive the following error message: 

   General error
   Failed to get the expression service

CAUSE

This error can occur if ODBC applications connect to and disconnect from the server repeatedly (over 50-60 times).

An example of such an application may be an Internet Web server applica- tion that is publishing ODBC data. For each Web-page-based query, the Web server may be opening a connection to the ODBC data source, processing the query, and then disconnecting from the data source.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Windows 95. An update to address this problem is now available, but is not fully regression tested and should be applied only to computers experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft does not recommend implementing this update at this time. Contact Microsoft Technical Support for additional information about the availability of this update.

This issue is resolved by the following updated file for Windows 95: 

   Rpcrt4.dll version 4.00.953 (dated 7/23/96) and later
To install this update, follow these steps:

  1. Download the Rpcrtupd.exe file from the Microsoft Software Library to an empty folder.

  2. In My Computer or Windows Explorer, double-click the Rpcrtupd.exe file you downloaded in step 1.

  3. Follow the instructions on the screen.

The following file(s) are available for download from the Microsoft Software Library: 

 ~ rpcrtupd.exe (size: 273472 bytes)
For more information about downloading files from the Microsoft Software Library, please see the following article in the Microsoft Knowledge Base: 

   ARTICLE-ID: Q119591
   TITLE     : How to Obtain Microsoft Support Files from Online Services
The following files are installed by Rpcrtupd.exe: 

   File name     Version    Date/Time        Size     Destination folder
   ----------------------------------------------------------------------
   Rpcrt4.dll    4.00.953   7/23/96 9:53a    202,752  Windows\System

MORE INFORMATION

For additional information about issues resolved by updates to this component, please see the following articles in the Microsoft Knowledge Base: 

   ARTICLE-ID: Q149846
   TITLE     : RPC Program Fails When Server Run Down Occurs

Additional query words: 95
Keywords : win95 kberrmsg kbfile kbnetwork kbfixlist
Version : 95
Platform : WINDOWS

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Last reviewed: November 26, 1997
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