At this time Microsoft Dynamics 365 requires version 4.6.2 of the .NET Framework for plugin assemblies
A few days ago somebody raised a question in the community forums: https://community.dynamics.com/crm/f/117/p/280331/801869 “Currently, Microsoft Dynamics 365 requires the .NET Framework version 4.6.2 for plug-in assemblies. Rebuild the assembly with the .NET Framework version 4.6.2 and try again.” Well, it’s hard to know what’s happening in various environments, so I made a note for… Read More »