Error Registering a Plugin – System.NotSupportedException: An attempt was made to load an assembly from a network location

Whilst trying to setup a new server on a client site, I encountered the following error whilst trying to register a plugin (the kind of task you will have performed hundreds of times before) Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly ‘file:///C:\crmtools\PluginRegTool\PluginRegistration.exe’ or one of its dependencies. Operation is not supported. (Exception from […]