IP-based AUTD has detected that the registry value for the minimum heartbeat interval is set to a value that is too low. As a result, we will proceed with the default minimum heartbeat interval of [] seconds and the default maximum heartbeat interval 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.

Details
Product: Exchange
Event ID: 3018
Source: Server ActiveSync
Version: 6.5.7638.0
Component: Microsoft Exchange ActiveSync
Message: IP-based AUTD has detected that the registry value for the minimum heartbeat interval is set to a value that is too low. As a result, we will proceed with the default minimum heartbeat interval of [<number>] seconds and the default maximum heartbeat interval of [<number>] seconds. To avoid seeing this message in the future, please correct this registry value, or omit it entirely in order to use the default.
   
Explanation

Exchange ActiveSync detected that the registry value for the up-to-date notifications minimum heartbeat interval is set too low. This configuration is not valid. The minimum heartbeat interval must be set to a value lower than for the maximum heartbeat interval. Exchange ActiveSync reverted back to the default values for minimum heartbeat interval and maximum heartbeat interval until a valid configuration is set. The default minimum heartbeat interval is 60 seconds. The default maximum heartbeat interval is 2,700 seconds (45 minutes).

   
User Action

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 minimum heartbeat interval is MinHeartbeatInterval.

  3. Do one of the following:

    • To return to the default configuration of 60 seconds, delete the parameter MinHeartbeatInterval.
    • To change the minimum heartbeat interval value, right-click MinHeartbeatInterval, and then click Modify. In Edit DWORD Value, in Value data, type a value between 1 and the value configured for maximum heartbeat interval.
  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).

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