How do I resolve an ActiveX component can't create object error in Sage 500?

Overview

We are receiving an error when trying to do a gettax call suddenly in Sage 500: Error occured at function AVA_GetTax - ActiveX can't create object.

Sage 500

A .dll file must be registered if you are getting an ActiveX error when you test your connection with your credentials.
Avalara.AvaTax.Adapter.dll needs to be registered with RegAsm.exe found in Microsoft .NET 2.0 framework.

There are a two methods to get the file registered:
In the AvaTax runtime folder (usually in C:\Program Files\Avalara\), there are two batch (.bat) files named "register_for_com.bat" and "Reg.bat". Double click both files to register the needed files. Please note that in Windows 7 and Windows Server 2008, you must right click on the file name and select Run as Administrator.
Locate in the AvaTax runtime folder (usually in C:\Program Files\Avalara\), "Avalara.AvaTax.Adapter.dll". Right click this file and select "Open with...". Select the program "Regsvr32.exe" (located in C:\Windows\System32\) to run the file. A message stating the registration was successful displays. If you do not get this message, you may need to have a system administrator register the file for you.