Comment # 4 on bug 983900 from Cristiano Guadagnino

Found the problem: your comment that KRDC was ported to KF5 led me to the
solution.

The problem is that the new krdc uses the KF5 kde wallet subsystem. This wallet
contained the wrong passwords for my RDP sessions. So the login was refused and
the session was instantly closed.

After realizing this I opened kwalletmanager5 and deleted the wrong passwords.
Now my rdp sessions are working correctly.

Previously they were working correctly because they used the old kde wallet
subsystem, which contained the correct passwords.

So it was my fault after all, HOWEVER I think it is not correct that a failed
login in an rdp session simply closes the session without any kind of error
message.

What do you think? Should I open a new bug for this erroneous behavior?