Incompatible applications

See if that application works on Windows server 2008 R2. If it does then problem is simple, you can virtualize them on Citrix XenApp 6.5 as a published application and deliver it to any end-devices. If not, you can use hosted VMs as said above or XenDesktop VDI can do this. But as XP reaches its EOL, test if that XP apps works on the server, then your problem is solved.

My approach is bit different this type of issues. Most of Windows XP based application can run smoothly on windows server 2003 sp 2. You can install Citrix xenapp 5 FP 2 on win 2k3sp2 and publish the application on it then use the same web interface that used to publish XA 6.5 Farm, to publish XA5 farm.  Then you can access both platforms from same web interface.

Regards
Gayan

It is almost guaranteed that if it doesn't run on Win7, it won't run on XA 6.5 (XA 6.5 is only on Win2k8 R2, which is the same code base as Win7).
As Gayan said, you should be able to run your app on a Win2k3 server and publish it from there.

Coralon

sometimes the compatibility mode do wonders.
try if the compatibility mode rum with windows 7 - if yes use win2008r2 with this settings.
(works for me and the support staff with some old apps)
publishing the app with windows xp is also a solution (how CarlWebster say) but more complex.

@CarlWebster is that we need XenDesktop environmnet for VM Hosted Apps

Is Sequenicing in citrix or APP-V a solution for this.

VM Hosted Apps is based on using XenDesktop.

I don't use sequencing or profiling as none of my customers use it so I can't answer that.

Sequencing is the name/nick-name of processing applications through App-V for streaming.  I don't use it either, so I can't say much to it, other than having heard it works very well under a number of circumstances.

From a practical point of view:
If you go the XA on Win2k3 app, you only have enough instances to run the applications on your servers, and a lot of capacity.
If you go with XD and WinXP, you'll need 1 machine for each instance of the application *outside* of the 'normal' hosted desktops.  To me, this is a much more complicated solution, but it is entirely workable.

Coralon

I just am a little Lost here  : But from all your comments i understand This:

1.We can use VM-Hosted Apps -- like have an XP machine and Publish it through Xenapp or something

Q: Do we need to install full XenDesktop environmnet for this ... we do not have Xen Desktop at all in our environment.

2.We can Add additional Farm based on xenApp 5 on windows 2003  and publish through same Web Interface --- This seems Good Solution but need to test if the apps work on windows 2003 server

Q: can we add a windows 2003 Server in an existing Xenapp 5 farm which has all the servers until now based on Windows 2008 . I havent tried adding Windows 2003 to that far,m , is it possible or i have to create a separate farm for windows 2003 servers

1.  Yes, VM Hosted Apps uses XenDesktop.  In XenDesktop there is an option that says a VM is used for VM Hosted Apps.

2.  It is best if you have a separate farm for each OS and bitness.  Meaning, if I used Server 2003 32-bit and server 2003 64-bit, I would prefer to have two farms since programs will be installed in two different places depending on bitness.  i.e for 32-bit c:\program file\programname and for 64-bit c:\program file (x86)\programname.

But you run the risk of someone opening a policy or setting that is specific to 2008 from a 2003 mgmt console and really screwing things up.  I would not risk it.