A new KB article (KB2798286) was released today related to Remote Apps being disconnected with a protocol error when the Remote App supports Remote Applications Integrated Locally (RAIL). It seems like a similar update as KB2696020 http://support.microsoft.com/kb/2696020/en-us?sd=rss&spid=14134. Only this time the fix is also applicable for Windows 7.
“…Consider the following scenario:
- You install the Remote Desktop Session Host role service on a computer that is running Windows Server 2008 R2.
- You publish a RemoteApp application that supports the Remote Applications Integrated Locally (RAIL) feature on the computer.
- You use the Remote Desktop Web Access (RD Web Access) service on a client computer that is running Windows 7 or Windows Server 2008 R2 to access the RemoteApp application.
- You open the RemoteApp application and perform several operations.
Because of a protocol error, this session will be disconnected. Please try connecting to the remote computer again..”
Source and download: http://support.microsoft.com/kb/2798286/en-us?sd=rss&spid=14134