Microsoft Office Communicator 2007 Configuration

Today one of our clients started using Office Communications Online. We helped them get their subscription. After logging in to their Company Portal (https://home.emea.microsoftonline.com/Home/Home.aspx) they received the following error message:

You have not been assigned any services that you can use from My Company Portal. Your assigned services can be used only from your desktop. If you have questions about your services, contact your service administrator

Normally the company portal shows several services like a link to all SharePoint Online sites, Outlook Web Access and Live Meeting. Because they don't have any of these services assigned their homepage for their Company Portal is empty.

In order to get them going we helped them with downloading the Microsoft Online Services Sign In Application and installing Office Communications Server. Both can be downloaded via the Downloads page on the Microsoft Online Services / My Company Portal:

After they installed both these applications they still couldn't sign in to the environment. After talking to them they pointed out the Sign In Application showed an error message:

This application was not configured successfully

Via the Options Tab under Advanced Options a link is available called Reconfigure my desktop applications. Clicking that link solved all problems: