We have a laptop that been using our firm's Terminal Server via Internet Explorer 8 using the Remote Desktop Web Connection and it simply stopped responding and started throwing error messages. (Windows 7 - 64-bit) When I got a hold of it, I seen it was also having stack overflow errors. I upgraded to IE9 (beta) and the stack overflow errors have stopped but I cannot connect using the RDWC. Upon initial install or thereafter after resetting in Tools/Advanced, I get a message that ActiveX Control needs to be installed. I do that (though I'm not seeing anything happening) and though the page looks fine, the Connect button can be pressed, but nothing happens. I'm at a complete loss. I have the laptop here in the office trying to connect using the server name/tsweb as I do with all of the computers, and it won't connect. Note that I can sign on to the terminal server with this user's name and password from several other computers though these are all runnings Window XPP, and the Server is Windows 2003. Again have to point out that until last week, the computer connected fine and I understand there were no updates done to the system and that user is aware of. Also noticed upon the initial error (before upgrade to IE9) that the UserAgent was Mozilla. She's not running Firefox. She has IE and Chrome. Cannot connect using Chrome either - click on Connect button, does nothing. Hope there's a quick and easy solution!!