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SSO for IIS .NET Development with sncgss.dll to SAP ABAP

Dear all,

I would like to ask for your help and advice for Single Sign-on development with .NET application with IIS .NET connector 3.0 and SAP SNC Library (sncgss.dll) to SAP ERP ABAP system NetWeaver 7.0 EHP6.

Our development team had developed the web portal on Microsoft IIS using .NET and .NET connector for connect & read data from SAP ERP System and setup with SAP SNC library C:\SNC_LIB\sncgss.dll for single sign-on to SAP ERP System.

We installed the SNC Library sncgss.dll on IIS server and user workstation.

We tested the SSO with SAP Frontend GUI and verified the SSO are ok in both server and workstation and checked the environment variable for SNC library are identical on both server and user workstation.

In addition, the IIS configuration is set with impersonate = true

Our developer initially tested by logon to IIS server with user's id example <DOMAIN\username> and open the web portal example: http://webportal:8089/index.html with Internet explorer and able to open the portal page and retrieved data from sap erp system without input user name password and connected with SSO. All the testing are ok at this point.

However, when our developer login to user workstation and open the same web portal example:http://webportal:8089/index.html the initial page is ok but the program returned message "Could not find a suitable SAP user for the SNC name of the caller".

Therefore, I would like to ask for advice if any area I should be further try to resolve this issue.

Thank you for your help and support.

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