Developer Documentation Library > Interviewer - Server > Administration and maintenance > Users cannot access the interviewer session engine
 
Users cannot access the interviewer session engine
An error message stating that UNICOM Intelligence Interviewer cannot access the interviewer session engine can be caused by several reasons. Some common reasons are:
Installation issues, such as mrIEngWS was installed for the wrong website.
Permissions issues, such as the mrIEngWS anonymous user was set up incorrectly.
Firewall issues, such as the firewall blocking traffic between the web and interview tiers.
IP issues, such as the address that is visible to the DMZ being different to that seen internally.
Protocol issues, such as the interview tier being configured for SSL or for a different port to the web tier.
Software issues, such as DPM not running.
See also
Administration and maintenance