On a client machine if you try to log in for the first time on a Accpac Web Deploy and the installer didn’t come up or freeze your Internet Explorer.
Run Fiddler (http://www.fiddler2.com/fiddler2/) on your workstation and check if you received an Error 404.2, when Internet Explorer try to download smdotnet.exe
If it’s the case.
Goto IIS on your Accpac Web Deploy Server, remove the feature in IIS : CGI, ensure this is not check.
Remove the feature, reboot the server.
Test, this should work.