First please set the Key connection to the Lock as shown in the following article on connecting to Siemens PLCs: https://tosibox.freshdesk.com/a/solutions/articles/2100033778?lang=en..
To be able to connect to WinCC from Simatic Shell please follow the following steps:
- Network adapter selection: Tosibox TAP-Windows Adapter
- Multicast Proxy: IP Address of the PC with WinCC SCADA
Now the WinCC SCADA should be visible.