MSExchange Availability 4012

This article provides an explanation and possible resolutions for a specific Exchange event. If you don't find what you’re looking for here, try searching Exchange 2010 Help.

Details

Explanation

This event indicates that a proxy Web request to a remote Active Directory forest cannot be issued because of invalid credentials. When the Microsoft Exchange Availability service cannot directly connect to a mailbox that resides in a remote Active Directory forest, it sends a proxy Web request to another instance of the Exchange Availability service that is running in the remote Active Directory forest. The Exchange Availability service that is running in the remote Active Directory forest retrieves the requested information locally and passes the information back to the Exchange Availability service that requested the information. This event is logged on the Exchange server that sends a Web request to the Availability service that is running in the remote Active Directory forest.

User Action

To resolve this error, contact Microsoft Product Support Services. For more information, visit the Microsoft Help and Support Web site.

For More Information

If you are not already doing so, consider running the Exchange tools, which have been 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 and improve mail flow. 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.