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Citrix - Presentation Server or XenServer, and clients?

Westez asked
Windows 2003 Standard Server R2, WinXP Pro SP3, and Win7 Pro.

I'm trying to determine which desktop client I need?

When I check the Citrix app on the server it says "Citrix Presentation Server Version 4.5.1".  When  I check Citrix's site for desktop clients I don't find Presentation Server, I see Xen this and that.  

So is Presentation server v4.5.1 also known as a Xen server, or are they two different products?  If it is a Xen server, what version is it?  I don't see v4.5.1 for Xen server on Citrix's site.

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Presentation server and Xen Server are two different products.  XenServer is a hypervisor used to host virtual machines.  Presentation server is a generation old XenApp server, which hosts applications.
Presentation server is also now known as XenApp 5.2
Carl WebsterCitrix Technology Professional - Fellow
Most Valuable Expert 2019
Top Expert 2010
There is no such thing as XenApp 5.2.

Presentation Server 4.5 Feature Release 1 was rebranded as XenApp 5 for Server 2003 when XenApp 5 for Server 2008 was released.  When the original XA5/2003 product was installed, almost every screen/dialog/wizard still said Presentation Server.

The current products are XenApp 5 Feature Pack 3 for both Server 2003 and Server 2008.  There is a completely separate product for Server 2008 R2 called XenApp 6.  XenApp 5 will NOT run or installed on 2008 R2.  XenApp 6 will not run or install on 2003 or 2008.

XenServer is a product similar to Microsoft's Hyper-V and VMware's ESX/vSphere.


I see the Online Plug-In Version 12 on Citrix's site.  Would this be considered the client?  

And would it be correct to say that  Presentation Server 4.5 Release 1 has been branded as or is known as XenApp 5 Feature Pack 1 for Windows 2003?

And thanks for schooling me on the subtle differences between XenApp and XenServer.


We're not using the web interface at this point.  I'm reading some of the doc's on Citrix's site, and it says the Online Plug-in requires the web interface.  I'm  still digging for the latest client I would use to connect to the server from XP Pro and Win 7 Pro.


Here's a link that may sort out the confusion about the clients and their names and what used for what.


Other questions I have regards a couple of config settings for the old ICA client.  What's the difference between choosing the Http and Tcp\IP protocol setting vs the Tcp\IP protocol setting?  And the LAN vs WAN connection setting?


Thanks guys, I've got it sorted out now.  I found the legacy clients and downloaded XenApp version 11.  I have it installed and am now connected.