While trying to start Solid Edge (SolidEdgeUtils.Connect), I notice that if I have the PDM integration add-in "connected", Solid Edge will start (edge.exe on process monitor) but then it will try to start design manager (desmgr.exe) due to the PDM integration add-in and fails.
If I disconnect manually the add-in and perform the SolidEdgeutils.connect, I don't have that problem.
What I'm trying to accomplish at this moment is start Solid Edge, disconnect the add-ins hoping to have a successful startup and then connect the add-ins.
Modifying the Registry do the trick, Thanks. I also found out that I can get the same result without modifying the Registry with regedit by unchecking manually the Addins from within Solid Edge (Setting --> Addins) and close the program (this will modify the registry), with this change Solid Edge won't do the call to the Addin and when I run SolidEdgeUtils.Start or Connect, it opens without issues.