"87" is the result-code and it means something about the request or response failed to process correctly. You have to identify "what it is" first. What is the web site URL? From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Rob Moore Sent: Wednesday, May 11, 2011 6:56 AM To: isalist@xxxxxxxxxxxxx Subject: [isalist] Error 87 Using TMG Standard. Not caching, not using Firewall Client. I have a user trying to download a form from a City of Philadelphia website. It worked before we upgraded from ISA to TMG. Now when he tries to download the form, it fails. When I monitor his activity, I don't get a Result Code when it fails. All I get is an Action of "Failed Connection Attempt" and an HTTP Status Code of "87 The parameter is incorrect." What's going on? How can I work around this? Thanks, Rob -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Rob Moore Network Manager 215-241-7870 Helpdesk: 800-500-AFSC