We just rolled out the latest version of 2012 Horizon and found a very odd issue. With the 2012 Agent installed, our developers can no longer use the GIT integration in Visual Studio. We get the following error: "Unable to start process. Timeout waiting for Child process to open named pipes."
If I uninstall the Agent, Visual Studio GIT works perfectly. I don't even have to be using the Horizon for this issue to happen. If I RDP to the machine the same error happens. As long as the agent is installed, GIT breaks in Visual Studio.
However, command line and third party tools work fine to access the repositories. This is very odd!
Just horizon installed and nothing like appvolumes or something similar? I'd open a ticket if you haven't, just based on that message it sounds like a bug, where they are accessing the same thign at the same time.