okay, found this thread and it got me one step further
It works now! However only with strict error checking off
Getting this error but bifrost is installed and plugin is activated. And not used in the scene
Error: Strict error checking on, caught the following error or warning.
Error: line 1: VRay: Could not load the Bifrost module! You will not be able to render Bifrost as isosurface or metaball. The error message is:[loadLibEx] 126: LoadLibrary failed (126): The specified module could not be found.
If this error message is unavoidable but not fatal, please email support@thinkboxsoftware.com with the error message, and disable the Maya job setting Strict Error Checking.
at Deadline.Plugins.PluginWrapper.RenderTasks(Task task, String& outMessage, AbortLevel& abortLevel)