Notable Citrix Updates

A couple of weeks back I was able to attend the 2015 Citrix Summit in Las Vegas. The event was a great resource – with sales education, technical deep dives, and an array of new programs. One great bonus was the fact that it was held in January, so I didn’t have to suffer the 110°+ heat of a Las Vegas summer.

There are three releases I want to make special note of – these are releases we have had success with, along with great client feedback. So without further ado, here are my top three notable Citrix updates from the Summit:

  1. XenApp and XenDesktop 7.6 updates: There have been changes in graphic engines, with H.264 becoming the new industry standard. With the release of the 7.6 updates, Citrix is moving in that direction as well.
  1. PVS Cache in RAM, with overflow to Hard Disk (HD): This is a great new feature on PVS, because you can eliminate the need for expansive storage. We have clients currently using this feature, and they can’t tell the difference between 3PAR SATA Hard Drives and Whiptail SSD.
  1. GPU into XA/XD: We have successfully deployed AutoCAD for some of our clients via XenApp, and so far the feedback has been great. One client said, “The performance is as good as if it were locally installed”.

XenDesktop 7.5 Performance Metrics Tool Issue

The XenDesktop 7.5 VDA Core Services desktop and all server patches released prior to September 2014 have issues that require an immediate fix. The VDA Core Services patches have a flaw in how they configure the Citrix performance counters. These flaws will prevent tools like Desktop Director HDX monitors (and the HDX Monitor Standalone tool) from working properly when attempting to view the performance metrics of a session.

Citrix has released a new patch to correct this. This new patch must be installed on top of any previous patches.

Patches for XenDesktop 7.5 desktop OS x64 VDA Core Services:

  • ICAWS750WX64008 will break the Citrix monitoring performance counters.
  • ICAWS750WX64011 will fix the performance counters, but does not contain any of the previous hotfixes (so you will need both).

Patch details can be viewed here:


This issue will show up as the following when viewing in each of their respective tools:

  • Desktop Director


HDX Monitor 

HDX Monitor will refuse to connect to the target device.

  • Event Viewer

You will receive an event on the DDC that the Desktop Director web page was served from. See the example below.

Log Name:      Application

Source:        Citrix Director Service

Date:          10/13/2014 10:43:51 AM

Event ID:      5

Task Category: None

Level:         Error

Keywords:      Classic

User:          N/A



Failed to connect to data source ‘The broker service reported an error. See the event log for more information.’ (‘′).

Verify that the data source is available.

 User: ‘\Admin_account’

Console operation: ‘Retrieving running applications details…’

 Additional diagnostics information (error message):

‘Failed to execute broker synchronous command=’GetIcaLatency’