Microsoft KB Archive/154496

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ODBC Error After Multiple Connections and Disconnections

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Q154496

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The information in this article applies to:


 * Microsoft Windows 95

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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 Download Center 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 is available for download from the Microsoft Download Center:

"Download.gifoad Rpcrtupd.exe now]" For additional information about how to download Microsoft Support files, click the article number below to view the article in the Microsoft Knowledge Base:

"Q119591 How to Obtain Microsoft Support Files from Online Services" Microsoft used the most current virus detection software available on the date of posting to scan this file for viruses. Once posted, the file is housed on secure servers that prevent any unauthorized changes to the file.

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

This issue is resolved in Microsoft Windows 98.

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

"Q149846 RPC Program Fails When Server Run Down Occurs" Additional query words:

Keywords : kberrmsg kbfile kbnetwork win95 kbgraphxlinkcritical

Issue type :

Technology : kbWin95search kbWin95