AckTimeout

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HKLM\SOFTWARE\Microsoft\MSMQ\Parameters

Data type

Range

Default value

REG_DWORD

0x0–0xFFFFFFFF ( milliseconds )

(Message Queuing calculates a value for this entry dynamically.)

Description

Determines how long Message Queuing waits for internal message acknowledgment of a network session before deciding that the session should be closed.

By default, Message Queuing calculates an optimal acknowledgment timeout based on the quality of the communication line. However, you can override the result of the calculation by adding this entry to the registry and setting it to a different value.

Note Image Note

Windows 2000 does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.

Caution Image Caution

Adding this entry to the registry prevents the system from using an optimal value calculated for each line. If you set the value of this entry too low, sessions can be disconnected before any messages are delivered.