Add the following xml Auth node inside <ServerInstance> node of E:\OracleBIData\web\config\ instanceconfig.xml:
<Auth> <ExternalLogon enabled="true" logonPageAllowed="true"> <ParamList> <Param name="UID" source="url" nameInSource="sso_token"/> <Param name="PWD" source="constant" value="obips.hss.ssotoken"/> </ParamList> </ExternalLogon> </Auth>