Secure Password Extension (SPE) not resolving to correct URL.
The following error is received:
Server Error 404 - File or directory not found. The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable.
Review all 'Redirect' settings in Internet Information Services.
Open the Internet Information Services (IIS) Manager and check all the 'HTTP Redirect' settings and remove any previous settings that might not be needed any more.