Recently, I have come across with an error message “Unable to load plug-in type” while updating the plug-in. below are the details on this issue:
I have added a new Plug-in class to an existing plug-in assembly and added some steps to it in DEV environment.
While importing solution into SIT environment with updated Plug-in assembly, class and steps, received the error message.
Unable to load plug-in type
CRM solution import process check the plug-in assembly and classes for the register steps in existing assembly in CRM instead of updated plug-in assembly in solution that we are importing. Hence, we are receiving the error because these newly registered steps are related newly added plug-in class and that is not existed in CRM already.
CRM Solution Import routine checks for the plugin class/type definition in the existing plugin assembly in the server rather than the new…
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