Self solved.
I suppose I got it right.
Everything done as instructed and then opened the Login Agent Service Properties on the runtime resource.
Clicked ""Logon"" Tab and the default setting is the ""Local System Account"" checked.
Instead, I checked the ""Account"" and entered my admin user/password.
It worked!! The runtime resource re-connected within a few seconds after it got disconnected.
I 'd rather Active Directory accout(something like NT AUTHORITY\LocalService or NT AUTHORITY\NetworkService) than the admin user/password, but it didn't work.
Hope it helps.