NServiceBus.AmazonSQS 4.2.1, 4.1.3, and 3.3.3 - Patch releases available

Hi everyone,

We’ve just released NServiceBus.AmazonSQS 4.2.1, 4.1.3, and 3.3.3.

Fixed bugs

  • #271 InvalidOperationException thrown from ContextBag.Merge

How to know if you are affected

You are affected if you have an endpoint that is processing messages on the main queue and a satellite queue at the same time.


Log entries are seen saying a message is being retried because of the following exception: System.InvalidOperationException: Collection was modified; enumeration operation may not execute.

Should you upgrade immediately

If you are seeing the indicated log messages, you should upgrade to prevent them from occurring.

Where to get it

You can download the updated version and see the full release notes here:

With thanks,
The team in Particular

Please read our release policy for more details.