CTX: MSInstaller Windows Pops up on XenApp 4.5

When you open Internet Explorer in a client connected to a Citrix XenApp 4.5 server

The following message window pops up for few seconds when IE launched:

Windows Installer Preparing to install

If you check the Event Viewer in the XenApp server, you will found these entries:

Event Type: Warning
Event Source: MsiInstaller
Event Category: None
Event ID: 1001
Date: 8/15/2008
Time: 2:05:31 PM
User: DOMAIN\User
Computer: USCTXSRV01
Description:Detection of product '{44412985-02EE-4824-9EA5-B2AF6D98924E}', feature 'CTX_MF_MetaFrame_Core' failed during request for component '{79ED246A-69C7-4CEF-B5A2-57EC3B86BC31}'
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type: Warning
Event Source: MsiInstaller
Event Category: None
Event ID: 1001
Date: 8/15/2008
Time: 2:05:31 PM
User: DOMAIN\User
Computer: USCTXSRV01
Description:Detection of product '{44412985-02EE-4824-9EA5-B2AF6D98924E}', feature 'MetaFrame_XP', component '{DF3019A7-AD05-4A30-9C93-2A8F9CD501AB}' failed. The resource 'E:\' does not exist.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Solution:

Edit the following registry value for that component to resolve the problem. The registry value is located here: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Components\7A9103FD50DA03A4C939A2F8C95D10BA"58921444EE204284E95A2BFAD68929E4"="E:\" replace E:\ or other drive to C:\.