RFC_LOGON_FAILURE: SNC required for this connection for DDIC user in SUM

[former_member700444]

Hi All,

We are doing to SP upgrade using SUM and during execution phase we are getting below error

DDIC password does not work:

RFC login to system SBR ashost xxxxxxx nr 01 gwhost xxxxxxx gwservice sapgw01 failed with code 2 key RFC_LOGON_FAILURE: SNC required for this connection.

Could you please suggest how can we resolve this error without restarting the server.

Regards,

Ramana

[felixfelix]

SAP says:

• SUM certificates are not required if the RFC authentication with user and password is allowed, that is, if the parameter snc/accept_insecure_rfc is active in your system
  --> this didnt work on our side although snc/accept_insecure_rfc =1 --- so we still need to exchange the certifictes. Anybody the same issue that snc/accept_insecure_rfc =1 was not sufficient?

[Max_Muster]

https://me.sap.com/notes/3338929/E