Topic Last Modified: 2010-05-03

The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager monitors the Windows Application log on computers running Exchange 2010 and generates this alert when the events specified in the following Details table are logged.

To learn more about this alert, in Operations Manager, do one or more of the following:


Product Name


Product Version

14.0 (Exchange 2010)

Event ID


Event Source


Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Mailbox/System Attendant

Rule Name

Could not read a registry key because the value is not a DWORD.


This Error event indicates that the registry key in the HKLM key specified in the event description is not a DWORD type as expected. This is abnormal as most keys are created by an Exchange server installation.

User Action

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

  • Examine the registry key and determine the value type.

  • Check your server's change history to determine if and when this registry key was added by an administrator. If the key was added by an administrator, correct the key to a DWORD type.

For More Information

If you are not already doing so, consider running the Exchange tools created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.