Data type Range Default value
REG_DWORD 0x0 - 0xFFFFFFFF 0x100 (256)


Determines how often MQIS on the primary site controller (PSC) sends ACK (acknowledgment) messages. ACK messages are sent repeatedly until the intended recipient acknowledges its receipt.

The interval between acknowledgment messages is based on the number of changes to the Active Directory on the master domain. The value of this entry specifies the number of changes that must occur between ACK messages.

Note Image Note

Entries in the Migration subkey are used only when there are MSMQ 1.0 MQIS servers running Windows NT 4.0 and earlier. They are not used when all servers are running Windows 2000.

Message Queuing does not add this entry to the registry. You can add it by editing the registry or by using programs that edit the registry.