Only %1% of user %2’s %3 attempted RPCs have succeeded in the past %4 minute(s) (which is less than the threshold of %5%)). Adapter Speed: %6 kbps Machine Name: %7 Client Mode: %8

Details
Product: Exchange
Event ID: 9640
Source: MSExchangeIS
Version: 8.0
Symbolic Name: msgidTooManyClientErrors
Message: Only %1% of user %2’s %3 attempted RPCs have succeeded in the past %4 minute(s) (which is less than the threshold of %5%)).
Adapter Speed: %6 kbps
Machine Name: %7
Client Mode: %8
   
Explanation

This Warning event indicates that a Microsoft Outlook client computer may have experienced problems. The number of successful remote procedure calls (RPCs) sent to this Microsoft Exchange server by the client is less than the specified threshold in a specific time period. Potential causes include:

  • Server resource bottleneck (for example, disk or CPU)

  • Network problem

  • Problems on the client computer

   
User Action

To resolve this warning, do one or more of the following:

  • If this condition is occurring for many users, it could be due to slow response times on the Exchange server. To determine if this is the case, investigate the typical sources, such as disk latencies, queues, or CPU utilization.

  • If this condition is occurring for only a small number of users, or there is no sign of a resource bottleneck on the Exchange server, the problem is likely to be either at the network level or with a resource bottleneck on the client computer.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

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