Symptoms
When users attempt to launch a published application via Parallels Client, below error is displayed:

Cause
Terminal Server Agent is installed on Windows Server 2008/2008 R2 OS.
Resolution
- Logoff the session for the particular issued user.
- Open the RAS Console > Farm > Terminal Servers > Properties of the Terminal Server you are publishing issued resource from.
- Switch to the Agent Settings tab.
- Tick the option: Use RemoteApps if available.
- Apply the settings.
NOTE: if multiple Terminal Servers are effected, this change needs to be done on all of them.
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