G DATA Business Solutions: Installation not available

What can I do if only "Uninstall" can be selected when running the client setup, although the G DATA Security Client is not installed?

Utilizing the AVCleaner is then necessary on the affected system.

If the affected machine also hosts a G DATA Management Server, it must be reinstalled along with the G DATA Security Client, as using the G DATA AVCleaner could corrupt the installation.

The database of the G DATA Management Server should be backed up before running the G DATA AVCleaner.

If G DATA Exchange Mail Security is also installed on the affected system, a new installation must be performed here as well.