IP-based AUTD has detected that the registry value for the maximum heartbeat interval is set to a value greater than the maximum allowable value of [] seconds. As a result, we will proceed with the default maximum heartbeat interval of [] seconds and the default minimum heartbeat interval value of [] seconds. To avoid seeing this message in the future, please correct this registry value, or omit it entirely in order to use the default.

Exchange ActiveSync detected that the registry value for the up-to-date notifications maximum heartbeat interval is set to a value higher than the maximum allowable value of 3540 seconds. This configuration is not valid. Exchange ActiveSync reverted back to the default values for maximum heartbeat interval until a valid value is set. The default maximum heartbeat interval is 2,700 seconds (45 minutes).

Important  This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore the registry if a problem occurs. For information about how to restore the registry, view the “Restore the Registry” Help topic in Regedit.exe or Regedt32.exe.

To edit the registry to resolve this error:

1. On the computer running Exchange Server, start Regedit.exe.
2. Open the following registry key:

   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MasSync\Parameters

   The registry value name for the maximum heartbeat interval is MaxHeartbeatInterval.

3. Do one of the following:

   • To return to the default configuration of 2,700 seconds (45 minutes), delete the parameter MaxHeartbeatInterval.
   • To change the maximum heartbeat interval value, right-click MaxHeartbeatInterval, and then click Modify. In Edit DWORD Value, in Value data, type a value larger than the value specified for minimum heartbeat interval and less than 3541.
   • To add the registry key parameter and specify a value for maximum heartbeat interval, right-click Parameters, point to New, and then click DWORD Value. For the new value name, type MaxHeartbeatInterval. Double-click MaxHeartbeatInterval. In Value data, type an appropriate value for maximum heartbeat interval in seconds. Type a value larger than the value configured for minimum heartbeat interval and less than 3541. The default value for maximum heartbeat interval is 2,700 seconds (45 minutes). Click OK.
4. Close Registry Editor.
5. Restart Internet Information Services (IIS).

Before you edit the registry, and for information about how to edit the registry, see Microsoft Knowledge Base article 256986, “Description of the Microsoft Windows Registry” (http://go.microsoft.com/fwlink/?linkid=3052&kbid=256986).