How to Enable or Disable Citrix Desktop Toolbar in Web Interface

An administrator of a XenDesktop farm can enable or disable the Citrix Desktop Toolbar for all users of a particular Web Interface site by editing the default.ica file used by that site.

Backup the default.ica file before editing it.
In the default.ica file, add the following parameter to enable the Citrix Desktop Toolbar functionality:
[Application]
ConnectionBar=1

Setting this parameter to 0 disables the Citrix Desktop Toolbar and causes the Virtual Desktop Agent desktop to appear across all available client monitors in a full screen mode.