Your cloud-based Citrix session is very slow.


  • IGEL OS 10.05 or higher, up to IGEL OS 11.05 (with IGEL OS 11.06 or higher, the default setting has changed)
  • Citrix client is connected to a cloud server. NOT affected: On-premises and Netscaler environments 


The HDX transport protocol is set to "UDP with fallback to TCP", which causes slow performance. 


  1. Open the UMS configuration dialog or the local Setup and go to Citrix > Citrix Global > Options.
  2. Set HDX Adaptive Transport over EFT to"TCP only UDP disabled" and click Apply or Ok.

    When the Citrix client is started again, the performance should be better.