A user might want to have a specific published application always start on maximized mode. For example, Microsoft Internet Explorer.
This can be accomplished easily on the application properties, but only if seamless mode is disabled, as shown in the following screen shot:

To force applications to start maximized without the need to disable seamless mode, you must publish a Visual Basic script that calls the application with maximized mode on as a startup switch.

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Instructions

To force a published application to start in maximized mode, complete the following procedure:

2. Replace iexplore.exe with the full path for the desired application on the XenApp server, including the executable.

3. Save this Visual Basic script with the correct file extension (.vbs) on a network share that is accessible from all XenApp servers where this application is or will be published.

4. Publish the Visual Basic script as an “Application > Accessed from a server > installed application” with the following settings:
   Command line: %windir%\system32\wscript.exe \\networkshare\script.vbs (replace this address according to your environment and to your script filename.)
   Working directory: %windir%\system32\
   

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This document describes how to force a published application to start in maximized mode with seamless mode enabled.

You can also change the published Visual Basic script icon to match the actual application icon under Shortcut Presentation as shown in the following screen shot: