The first item to check is your connection to the internet. On a windows PC it will have an icon showing the internet connection state. If there is and exclamation point or red x this indicates and issue with your internet connection. This will prevent the Anytime Collaboration service from working properly.
The next issue can be the ability to see the servers that the software is looking for. Use the service checker through this article.
If the service checker indicates there is an issue then you may have some web services blocked.