HTTP Status 500 – com.wedgetail.idm.sso.ProtocolException: com.wedgetail.idm.spnego.server.SpnegoException: com.dstc.security.util.asn1.Asn1Exception: Bad tag encountered: 78

See SAP Note 1799488.

Single sign on does not work by default for LaunchPad on the server machine. This behavior is by design as the servers are unable to pass Vintela filter.

Use the following URL to access LaunchPad on the server: http://localhost:8080/BOE/BI/logonNoSso.jsp

You may want to modify the LaunchPad link properties in Start Menu to use logonNoSso.jsp.