Many of my customers like to install CRM Outlook client update rollups silently in order to limit end-user interruption.  It is possible to silently install Update Rollups.  I've listed the necessary steps below:

• Download the CRM update rollup that you'd like to apply from the Microsoft Download Center (ex.  CRM2011-Client-KB2547347-ENU-i386.exe)
• Extract the update rollup package (CRM2011-Client-KB2547347-ENU-i386.exe /extract)
• After extracting the package, you'll see a file named CrmUpdateWrapper.exe
• To silently install the update rollup via a command prompt, launch the CrmUpdateWrapper (ex.  crmupdatewrapper.exe /q /log "C:\log\log.txt")
• The above syntax silently installs the update rollup and creates a log file in the specified folder.  Additional parameters that can be used are:
• /? = available parameter options
• /q = silent install
• /passive = installer/uninstall runs in passive mode
• /norestart = even if required, does not restart the computer after installation is completed
• /forcerestart = even if it is not required, restarts the computer after installation is completed
• /promptrestart = prompts the user to restart the computer after the installation is completed when a restart is required
• /uninstall = update is uninstalled
• /log = user can define the log file local path name

While it is definitely possible to run the above silent install from a command prompt, most customers will choose to use these parameters when pushing out update rollups through deployment software (ex. System Center Configuration Manager).

- Jon