It's taking a long time to launch any published application

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UDP traffic is not allowed from the user's location. This is the network/firewall issue. The client will automatically attempt to use UDP and will fall back to TCP if it can’t (note that authentication, etc… still happens using TCP). That explains long start time of any published application


Fastest solution will be just to disable Enable RDP UDP Data tunelling. In the Console go to the Gateway > Properties > Network tab:



To make UDP connection possible you need to allow it in your network. By default, Remote Application Server is using the following UDP ports:

To make that sure that UDP is allowed you should see over the native RDP client:


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