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Citrix XenClient Enterprise 4.5.1

Citrix have released a new version of Citrix XenClient Enterprise 4.5.1, now this version is no more “technical preview” its a ready for production. So go ahead and start using this beautiful product.

Citrix XenClient Enterprise 4.5.1 fixes several things in the XenClient Enterprise + The Synchronizer



Read more about whats been fixed in 4.5.1 here

Download Citrix XenClient Enterprise 4.5.1 here (Require MyCitrix ID)

Citrix XenClient XT 3

Citrix have released a new version of the Secure Client Hypervisor – Citrix XenClient XT 3

Designed for organizations with extreme security requirements, including public sector customers, XenClient XT 3 delivers a multi-level client virtualization solution with the highest levels of isolation and security. Unprecedented scalability and performance provide an optimal experience for even the most demanding user types. The source code for the Open Source Software components used in the product is available for download below. Below are system configuration and compatible hardware for the components of Citrix XenClient.

New in release 3

As well as many new and updated technologies and features, the primary improvement in this release is inclusion of secure management support through Synchronizer for XenClient XT 3.

  • Synchronizer XT 3: Provides scalable management of XenClient XT 3 through a CLI interface. See the Citrix 3.0.0 SynchronizerSetupandUsageGuidefor details about installing and using Synchronizer XT 3. Synchronizer can manage devices and VMs on those devices.
  • Updateduserinterface:New features and enhancements in the user interface include: simplified setup, reducing the interactions with the CLI required, such as VM disk management (encryption and reset-on-boot), PCI passthrough, new design for easier use, boot process improvements, and support for branding extensions.
  • Xen4.1 Hypervisor:Provides more stable and modern virtualization software, including improved PCI-passthrough and better support for modern hardware.
  • UpdatedHCLincludingIvyBridgedevices:Please refer to Citrix Ready or contact Citrix for the list of supported devices in this release.
  • Improvednetworkisolationfeatures:Allows more than one driver VM for networking, to allow proper separation of networking across multiple VMs each on different physical networks. Also includes a more configurable and defined interface for working with networking, to allow future extensions and improve support for introspection and filtering VMs.


Download Citrix XenClient XT 3 here (Require MyCitrix ID)

Communication Ports Used by Citrix Technologies *updated

Fred Donovan from Citrix have updated the whitepaper – Communication Ports Used by Citrix Technologies to version 1.5 (April 2011)


This document provides an overview of ports that are used by Citrix components and must be considered as part of Virtual Computing architecture, especially if communication traffic traverses network components such as firewalls or proxy servers, where ports must be opened to ensure communication flow.


The assignments are listed by the Internet Assigned Numbers Authority (IANA), updated regularly, and revised when new information is available and new assignments are made. The specific location of the port numbers list is available at the following Web site:

Microsoft Article “Network Ports Used by Key Microsoft Server Products”.

Microsoft Article ID 832017 “Service overview and network port requirements for the Windows Server system”.

Download WhitePaper – Communication Ports Used by Citrix Technologies here

Service Pack 1 for XenClient/Synchronizer

Citrix just released Service Pack 1 for XenClient 1.0! This update is basically maintenance release that includes over 100 fixes for both the XenClient hypervisor and the Synchronizer virtual appliance. This update brings bug fixes, stability and speed improvements, and it also includes a few new features.

The following new features where added and/or enhanced on the XenClient Hypervisor:

  • Support for additional laptops:
    • Lenovo T510
      • Core i5 and Intel HD Graphics
    • Panasonic Toughbook 52
      • Core i5 and Intel HD Graphics
  • Initial support for Windows 7 SP1 (Windows 7 SP1 Beta)
  • Improved system boot time
  • FlexCast integration – support for Streamed VHDs from Provisioning Services
  • Improved playback and recording support including default volume level enhancements
  • Revamp of VM auto boot experience to provide a close to native boot experience
    • Ability to boot directly to a VM
    • Ability to background launch additional auto boot VMs
    • Authentication to XenClient only when needed
  • Static IP configuration for wired networks
  • Blocking of unsafe configuration changes when a VM is asleep or hibernated
  • Increased reliability of wireless connections
  • Improved support for internationalized text entry
  • Proper handling and reporting on systems with dual batteries
  • Improved reliability of Application Discovery when using Secure Application Sharing
  • Support for Blu-Ray playback from internal and USB connected drives
  • Ability to use raw VHD files created with XenConvert tool
  • Security improvements
The following new features where added and/or enhanced on the Synchronizer for XenClient:
  • Improved support for connecting to Synchronizers with non-standard hostnames
  • Improved cross-browser compatibility of user interface
  • Improved support for internationalized text entry
  • Robustness improvements to VM image transfers
  • Ability to cache AD credentials offline with Dynamic image mode
  • Disk space usage accuracy improvements
  • Ability to upload a VM based on
Download Service Pack 1 for XenClient 1.0 here: