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Avalara Help Center

Why am I getting a .dll is not registered error when trying to use Sage 100 Advanced (fmly MAS 200)?


You are getting a dll error occasionally when trying to use Avalara features in Sage 100.


Sage 100 Advanced


  • A DLL error in Sage 100 Advanced (formerly MAS 200) indicates there is a communication issue between the server and the local workstation. Work with your IT department or a Sage consultant on communication optimization.