2483210 - HTTP 500 error occurs when calling SAPGUI transactions - the call is stuck in the /sap/public/myssocntl service

When calling SAPGUI transactions that open the application in a browser window, an HTTP 500 error (or in earlier releases, a blank page) is displayed in the browser. The application is not loaded, and the browser's address bar does not show the expected application URL. Instead, the address bar shows a URL like http(s)://<host>:<port>/sap/public/myssocntl?sap-client=<client>. This may give the impression to the business user, that an "incorrect" URL is generated.

In the corresponding dev_icf* traces (visible in the transaction ST11), one of the below errors is logged:

<ErrorInfo URL="http(s)://<host>:<port>/sap/public/myssocntl"> 
<ErrorMessage>Ticket-Anmeldung fehlgeschlagen - siehe Trace (Hinweis 495911)</ErrorMessage>

or

<ErrorInfo URL="http(s)://<host>:<port>/sap/public/myssocntl"> 
<ErrorMessage>Es wurde kein Ticket per Header empfangen.</ErrorMessage>

or

<ErrorInfo URL="http(s)://<host>:<port>/sap/public/myssocntl"> 
<ErrorMessage>Message E00001 Cannot be processed in plugin mode HTTP(S)</ErrorMessage>

Affected transactions are for example: SOAMANAGER, NWBC, BRF+, SM_WORKCENTER, SOLMAN_SETUP, DBACOCKPIT, etc.

Note: This current KBA is only relevant if:

1. The browser call fails in the service /sap/public/myssocntl

AND

2. The error returned is HTTP 500 Internal Server Error or a blank page without any error message.  The current KBA is only relevant if the call actually reaches the /sap/public/myssocntl service and it responds with HTTP 500 or a blank page. If the call terminates with errors like "This page can't be displayed",  INET_E_RESOURCE_NOT_FOUND etc., that indicates that the request does not reach the ABAP system, and the issue should be checked by the local network team.

AND

3. One of the above error messages are logged in the dev_icf* traces. For the error message "Message E00001 Cannot be processed...", decisive is the part E 00 001 which shows the message type, class and number. For other error messages like "Message E WEBDYNPRO_RT 023 cannot be processed...", this KBA is not relevant - please check the KBA 2993748 for details.

• SAP NetWeaver
• SAP Web Application Server for SAP S/4HANA
• ABAP Platform

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