NServiceBus Use 4.0 Handler in 2.6 saga

Question

we have a saga that calls numerous handlers. I want to start the migration from 2.6 to 4.0 so I have upgraded one of the handlers to 4.0. If I deploy this handler alongside the other 2.6 handlers and with a 2.6 saga that calls both types of handlers is there going to be trouble? Is this even possible?

Thanks

Answer 1

take a look at the NServiceBus 4.0 release notes

it states that 4.x is not compatible with 2.x...

upgrading to 3.x and then 4.x seems like a less painful option