Your network access has been interrupted - MS Access application on Remote Desktop Web Access

We are in the process of moving a Citrix provided MS Access application to "Remote Desktop Web Access" After the application has been launched for about an hour it bugs out with "Your Network Access has been interrupted ... " We lose access to our SQL tables but even more significantly - even local tables within the front end itself throw the same error when attempting to open them - that is not even attaching to an external table.