I have massive problems with my ArcGIS 10.3.1 installation since a week. My ArcMap crashes on start without any message. ArcCatalog crashes in opening the customize-dialog opening the tab commands.
Last thing i have done before the problem orccurs was to install the odac because i want to create an ole db connection to an oracle-service.
Now i deinstalled the odac, cleared the user-templates(mxt and gxt a.s.o), i deinstaled arcgis, cleaned up the registry, installed arcgis 10.3 again, installed arcgis 10.3.1 but nothing helped. My Win 7 is up to date, what can i do, i'm very frustrated.