I manged to get this solved by resetting my Kaspersky Settings to factory default und rebooting the PC.
Strange is, I did the same thing yesterday 192873 times and nothing happened. So I am not sure wether this is a solution or just a lucky coincidence.
Be advised that this may break some vital security settings. Don’t do this without asking your system administrator or the knowledge what you are doing! Don’t blame me! 
