XenApp 6.5 Sessions disconnect after opening a new application

So this was a hair pulling event.

Problem:

• I open one application – APP1
• I launch another application published from the same server – APP2
• APP2 goes through the lunching process
• APP1 disconnects immediately
• When APP2 launches, APP1 is reconnected
• I launch APP3, all apps disconnect
• When APP3 is fully up, APP1 and APP2 reconnect

I can see that all APPS have the same session id, so session sharing IS working.

I read a post that creating the reg key below on the device you are connecting from fixes the issue which I can confirm it helped, however I have 10,000 users to deploy this to, and want to see if Citrix has a fix for it.

In addtion it appears there may be a “private dll” from Cirix in the works.  I placed an entry in this Citrix Forum and I am hoping a Citrix engineer gets back at me.

What I tried:

Fix 1: If you are running 3.1 / 3.2
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix
Name: ReconnectWithNewApplication
Type: Reg_DWORD
Data: 1

Fix 2: (Downgrade your client!)

The Receiver client that is working for me is 13.0.0.6685

The Fix:

Of course this will require for you to apply this on a test server or create a new PVS image.  However, installing the Rollup Pack 1 for XenApp 6.5 fixed the issue.

Hotfix Rollup Pack 1 for Citrix XenApp 6.5 for Microsoft Windows Server 2008 R2
http://support.citrix.com/article/CTX132122

Session sharing fails for sessions launched from Version 5.4 of the Web Interface if:

The Client printer redirection XenApp policy is set to Allowed (default), but the Enable printer mapping option >under Remote Connection > Connection Performance on the Web Interface is cleared, or
the Client printer redirection XenApp policy is set to Prohibited, but the Enable printer mapping option under >Remote Connection > Connection Performance on the Web Interface is checked.