Using proxy servers with Citrix Virtual Apps and Desktops
If you do not use proxy servers in your environment, correct the Internet Explorer proxy settings on any user devices running Internet Explorer 7.0 on Windows XP. By default, this configuration automatically detects proxy settings. If proxy servers are not used, users will experience unnecessary delays during the detection process.
For instructions on changing the proxy settings, refer to the Internet Explorer documentation. Alternatively, you can change proxy settings using the Web Interface. For more information, see the Web Interface documentation.