Troubleshooting ActiveSync.Proxy Health Set

Applies to: Exchange Server 2013

The ActiveSync.Proxy health set monitors the health of the Exchange ActiveSync infrastructure on your Client Access servers (CAS). If you receive an alert that specifies that the ActiveSync.Proxy health set is unhealthy, this alert indicates an issue that may affect the Exchange ActiveSync components on the CAS indicated in the alert.


The ActiveSync.Proxy health set works with the ActiveSync health set. For detailed information about the ActiveSync health set, see Troubleshooting ActiveSync Health Set.

User Action

The ActiveSync service might have been able to recover after it issued the alert. So, when you receive an alert that indicates that the ActiveSync health set is unhealthy, first verify that the issue still exists. For more information, see Troubleshooting ActiveSync Health Set.

For More Information

Exchange ActiveSync

Mobile devices

Exchange ActiveSync virtual directory management tasks