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Why are we getting an "...assemby Avalara.AvaTax.Adapter..." error when testing the connecting in Microsoft Dynamics NAV?


When testing the AvaTax connection in Dynamics NAV we get the following error:


"This message is for C/AL programmers:

Cannot create an instance of the following .NET Framework object: assembly Avalara.AvaTax.Adapter, version=, Culture=neutral, PublicKeyToken=..."


Microsoft Dynamics NAV


  • Ensure that the Avalara dll is not in the C:\windows\assembly folder on the app server.
  • If it is there, then the Avalara objects need to be compiled. After compiling the objects you will be set.