Background UI tries to attempt to sign in to SCADA by using the Windows user when communicating fails
Posted: Thu Jan 13, 2022 11:51 am
Dear Colleagues,
I've noticed that sometimes when communication between server and client interrupts I got the following messages in PVSS_II logs on my Secondary DRS system (SSS).
USER-NAME is a pre-defined Windows user, that runs the Client UI on the client workstation. This user does not exist in SCADA, but exist in AD, and we use it just for launching the Application automatically after restart.
The messages happen only for the clients that are connected to the Secondary DRS project (background UIs).
We do not have such messages in normal operation or after client restart, only when communication breaks.
We are using Active Directory authentication login to WinCC OA, Single Sign-On option is deactivated for these workstations.
WinCC OA v.3.15.
No clue, why the background UI tries to attempt to sign in to SCADA by using the Windows user when communicating fails.
Some ideas will be highly appreciated.
I've noticed that sometimes when communication between server and client interrupts I got the following messages in PVSS_II logs on my Secondary DRS system (SSS).
Code: Select all
WCCOActrl (1), 2021.12.20 12:24:43.431, CTRL, WARNING, 0, , User not found: <USER-NAME> login at <DRS_SSS-project name>:_Ui_<NUM>
WCCILdata (0), 2021.12.20 12:24:47.667, SYS, SEVERE, 229, The Manager <SCADA-CLIENT-MACHINE-NAME> is already running at host $2., MAN: (SYS: 0 Ui -num <NUM> CONN: 1(R))The messages happen only for the clients that are connected to the Secondary DRS project (background UIs).
We do not have such messages in normal operation or after client restart, only when communication breaks.
We are using Active Directory authentication login to WinCC OA, Single Sign-On option is deactivated for these workstations.
WinCC OA v.3.15.
No clue, why the background UI tries to attempt to sign in to SCADA by using the Windows user when communicating fails.
Some ideas will be highly appreciated.