Topic Last Modified: 2005-11-18

The Microsoft® Exchange Server Analyzer Tool reads the following registry entry to determine whether the interval for removing public folder tombstone entries has been modified from the default value:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\<ServerName>\Public-<Public Folder Store GUID>\Replication Folder Tombstone Age Limit

If the Exchange Server Analyzer finds that Replication Folder Tombstone Age Limit is present in the registry, a non-default configuration message is displayed.

Folder tombstone information is used by public folder replication. The aging is required to prevent the folder tombstone list from growing unbounded. The default value of 180 days can be overridden with the Replication Folder Tombstone Age Limit registry value.

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 revert to the default configuration

  1. Open a registry editor, such as Regedit.exe or Regedt32.exe.

  2. Navigate to: HKLM\System\CurrentControlSet\Services\MSExchangeIS\<ServerName>\Public-<Public Folder Store GUID>

  3. Delete the Replication Folder Tombstone Age Limit registry value.

  4. Restart the Microsoft Exchange Information Store service for the change to take effect.

Before you edit the registry, and for information about how to edit the registry, see the Microsoft Knowledge Base article 256986, "Description of the Microsoft Windows Registry" (

For more information about the Replication Folder Tombstone Age Limit registry value, see the Knowledge Base article 159196, "XADM: Tasks Controlled by the IS Maintenance Schedule" (