maybe you have deleted or modified some projects which are registered with different settings.
Please open the WinCC OA project administration. If invalid projects are detected you should get a diialog with more detailed information and the possibility to "delete" the projects.
Best Regards
Leopold Knipp
Senior Support Specialist
did you open a new UI (from the start menu) to check if an error is reported?
If you open the project administration from an already started console maybe the error is not reported again.
Best Regards
Leopold Knipp
Senior Support Specialist