If you don’t want to install SSL, follow the below steps.
- Open “CustomerAndOrdersManager.exe.config” file located in “C:\Program Files (x86)\Microsoft Commerce Server 2007\Business User Applications” folder.
- AllowHTTP setting change the value from False to True.
- Try to connect again without HTTPS.
You can also setup the ssl. For IIS 6, you can use selfSSL (http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/993a8a36-5761-448f-889e-9ae58d072c09.mspx?mfr=true)