I get all webjod sdk code from here
I want to make class ServiceBusTriggerAttribute
public and non sealed and created nuget package using Microsof
This issue was recently discussed in the public repo here. I don't think trying to subclass the attribute is the way to go. I suggested some alternatives in the github issue. You're getting the above exception because all the WebJobs SDK assemblies are delay signed (in project settings). They need to be fully signed for use.