A system restart may be required because the file being updated is also currently in use. Users may be given the opportunity to avoid some system restarts by using the FilesInUse Dialog or the MsiRMFilesInUse Dialog. For more information, see System Reboots and Logging of Reboot Requests.
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A system restart may be required because the file being updated is also currently in use. Users may be given the opportunity to avoid some system restarts by using the FilesInUse Dialog or the MsiRMFilesInUse Dialog. For more information, see System Reboots and Logging of Reboot Requests.
http://msdn.microsoft.com/en-us/library/aa372835(v=vs.85).aspx