[Zubersoft]

The first thing I tell every user is to check the Windows Firewall settings. For reference, go to Control Panel->Windows Firewall->Allow a program or feature through windows firewall->MobileSheetsCompanion. Check the boxes for both "Home/Work (private)" as well as "Public". If you have an anti-virus program running, it most likely has a firewall built-in, so you will need to either disable the firewall, or disable the anti-virus program. If it still doesn't work after that, there are other options that can be tried, so let me know.

Mike