I setup a set of automated tests for one of my pet projects but annoyingly I came across the following error today: System.Reflection.TargetInvocationException : Exception has been thrown by the target of an invocation. ----> System.IO.FileLoadException : Could not load file or assembly 'MongoDB.Driver.Legacy, Culture=neutral, PublicKeyToken=null'. Invalid pointer (0x80004003 (E_POINTER)) The solution is to install