This article contains procedure to publish Explorer.exe in a New XenApp 6.x Farm Windows 2008 R2 x64-bit.
When publishing Explorer.exe either with the direct path "c:\windows\explorer.exe" or "%windir%\explorer.exe, the application starts to load and at finish, the window terminates displaying a box with drive letters.

Publishing the Explorer as an internet.exe /e /n (and so on) does not work.

There are no event logs generated.

Requirements

Download AutoIt, from here.

CTX922603 - How to Publish Explorer.exe with Specific Drives, Folders, or URLs

Note: See here for more on -e switch being obsolete as of Internet Explorer 7.

Complete one of the following workarounds to successfully publish Explorer.exe in a New XenApp 6.x Farm Windows 2008 R2 x64-bit:

Workaround 1

Use the following code in AutoIt:

Dim $PIDIE

$PIDIE = Run( "C:\Program Files\Internet Explorer\IEXPLORE.EXE", @SW_MINIMIZE)
Sleep(2000)
Run("C:\Windows\explorer.exe H:\")
Sleep(2000)
ProcessClose($PIDIE)
Sleep(2000)

Workaround 2

Browse to the registry of the affected server and add the following registry key:

HKEY_LOCAL_MACHINESYSTEM\CurrentControlSet\Control\Citrix\Wfshell\TWI
DWord (32bit) – LogoffCheckerStartupDelayInSeconds
Set it to a value of 10.

The setting is active for every subsequent session launched, a restart is not necessary.

Workaround 3

Add the following ADM-Template to your XenApp Policy: 

CLASS MACHINE
CATEGORY "Citrix Settings"
KEYNAME "SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI"
POLICY "Startup Delay"
PART "Set delay" NUMERIC REQUIRED SPIN 1
VALUENAME "LogoffCheckerStartupDelayInSeconds"
END PART
END POLICY
END CATEGORY

Problem Cause

This issue might occur if Windows 2008 R2 does not allow the Explorer dll to open in shell mode.

CTX922603 - How to Publish Explorer.exe with Specific Drives, Folders, or URLs

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