The WIE initializer fails on a standalone installation if the Windows Authentication feature is missing in IIS.
Fortify WebInspect Enterprise (WIE) 21.x
The WIE initializer gets an error like the following if SSC is not being used:
The WebInspect Enterprise Server refused the request. Your login credentials may be invalid.
The initializer_trace.log file has the following message:
WARN  Unable to determine SSC connected status. System.Net.WebException: The request failed with HTTP status 401: Unauthorized.
The WIE installation will always look for SSC, causing the credential errors in standalone versions if the Windows Authentication feature is missing in IIS.