After installing and configuring the new Citrix Receiver for HTML5 v1.1, applications launched on Internet Explorer 10 disconnects with the following error message after remaining idle for about 30 seconds.
“Cannot reach server. Check your network connection or contact your help desk for assistance.”
Resolution
- Within the local corporate network, on your XenApp 6.5 server, download and install CTX135757 without uninstalling XenApp 6.5 Feature Pack 1 available on http://www.citrix.com in the Downloads section.
- Restart the XenApp 6.5 server after installing the preceding hotfix. If you are connecting via Citrix Access Gateway, make sure that the access gateway is updated to the latest version 71.6014 or later.
Read the original KB article here.