Client's server is SBS 2011. Since they had Remote Web Access on a previous server, they asked for access for a single user on this server. When the user goes to the Computers section and hits the "Connect" button, nothing happens, but the Event VIewer is filled with these error messages. The server has 32 GB of memory. The old server had only 16 GB memory and this service was apparently working well. Obviously a configuration issue, but my web searches have not so far been helpful. The last time I worked with SBS was 2003 and I am extremely rusty (and wishing I had never taken on this particular customer).
You said that they were using another server for remote web access? Was this a server installed with the Remote Desktop Gateway role or was this just a server with direct RDP?
Can you upload the error messages that you are getting.
A good start would be to run the Fix My Network wizard from within the SBS Console.
SBS Console> Network Tab> Connectivity sub tab> click the 'Fix My Network' wizard from the right hand side.
Report back any errors / warning its states.
In addition - I would run download and install the SBS Best Practice Analyser and run a scan to search for potential errors.
https://support.microsoft.com/en-us/kb/2673284