New version keeps disconnecting and reconnecting

I have been using this app successfully to connect my Mac (Yosemite) to my office PC (Windows 8.1) for 5 months. After the update today, I am no longer able to stay connected. I can log in fine, but within 1 to 2 minutes am disconnected. The app does automatically reconnect, but I get disconnected again after a minute or two. It is impossible to do any work on my remote computer because I cannot stay connected long enough. Any suggestions?

Handigal about Microsoft Remote Desktop 8, v8.0.31