Passive UI Error Message

[ewoenne]

Hi,

We have seen the following dialog popup when trying to access historical alarms from a client UI running 3.15 P015

Critical Message
WCCOAui (7), 2019.04.02 10:08:59.120, SYS, SEVERE, 0, , Request from passive UI. I won't answer to this.

What could cause this error?

[leoknipp]

I have checked the source code but I could not find a code line where a log message like this is written.
Please check the code of your application if somewhere the functions makeError/throwError are used to generate this log message.

Best Regards
Leopold Knipp
Senior Support Specialist

[ewoenne]

Hi Leopold,

I can't find the error message either, it's not in our application error catalog

[dbindernagel]

Did a text search for this and I found the text "Request from passive UI. I won't answer to this." inside the file:
C:\Siemens\Automation\WinCC_OA\3.15\bin\WCCOArdb.exe
(Patch level 11)

[leoknipp]

I had a look at the source code.
Are you using a redundant system?
Was the system running in split mode when the error dialog appeared?

Best Regards
Leopold Knipp
Senior Support Specialist

[ewoenne]

Hi,

We are using a redundant system but it was not running in split mode.

The error dialog did appear on a remote UI instead of the server

[leoknipp]

I made several tests with a redundant system but I never got the error dialog, every query worked.
Can you reproduce it?

Best Regards
Leopold Knipp
Senior Support Specialist

[ewoenne]

Thanks Leopold. Our customer found the error dialog and I'll post back if I can reproduce it.