I just downloaded the Windows version of the App Manager for my Creative Cloud membership.
When I try to sign in I get an "Unable To Connect" error.
You can see it here: http://screencast.com/t/srQB1GrOBNfV
Can you help me ?
Msomerville are you on a managed network if so please contact your I.T. department. Outside of the I.T. department the steps offered by Mylenium should have resolved your network configuration difficulties. You may want to run through the document again, if you are on a non-managed network, or work with our support team directly. You can contact our chat support at http://adobe.ly/yxj0t6.
Then the document should resolve your network configuration difficulties. You can also find additional technical details under the Adobe Creative Cloud Service Access Documentation for IT section of http://www.adobe.com/devnet/creativesuite/enterprisedeployment.html.