It is not clear what is causing numerous instances of the Autodesk Desktop App to launch on your system. I would recommend uninstalling the Autodesk Desktop App to alleviate the problem. If you still want to use the Autodesk Desktop App, you can try reinstalling it and see if the problem continues. If you do not want to use the Autodesk Desktop App, you can download installations and updates from the Autodesk accounts portal.
Tony Michniewicz
Revit Software QA Analyst