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MSMQ Processing Fails

This occurred when upgrading the Scribe integration product, along with changing the connection settings to a test environment. In this process, MSMQ messages were critical in processing the publisher bridges that create and pass XML messages to a hosted service.

The queue for the message service was unable to process them due to the update, and ended up filling the queue, in several private message queues. The total amount of messages was over 1 GB. You can clear the messages from the MSMQ MMC, but if the process is failing due to resources, which this was, it will create dead-letter messages which have to be addressed.

  1. Backup the .mq files
    1. Note Before you run MQbkup.exe, select a folder to which you will back up the Message Queuing files. This folder must be located on a disk that has at least 2.5 GB of available space.
    2. Open a Command Prompt window.
    3. Change the directory to %WinDir%\System32.
    4. Run the following command:
    5. MQbkup.exe -b Drive:\Folder to Put Backup Files
    6. Note the location of the folder to which you backed up the Message Queuing files, in case you may need to restore them.
  2. Open the Computer Management MMC, click on the Dead-Letter messages, and purge the folder.
  3. Restart the MSMQ service.

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