Yes I tried with and without adding a password to Admin.
Another thing is happening is. On the webclient the connection "admin@localhost:IPC" is showing by default, so I go to "Manage Servers" and add my Active Directory userid and then delete the connection with admin. After connecting to the server, I close the browser, and when I open the webclient again, there it is the "admin@localhost:IPC" connection again as default.
No idea how to rid off this connection permanently. Any ideas?