Outlook startup options
Command-Line switch Purpose
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/CleanFreeBusy Cleans and regenerates free/busy information.
/CleanReminders Cleans and regenerates reminders.
/CleanViews Restores default views.
/ResetFolders Restores missing folders for the default delivery location.
/ResetFolderNames Resets the language of the default folders to the language of the Outlook client.
/ResetOutlookBar Rebuilds the Outlook Bar.
/NoPreview Turns off the Preview pane at startup.
/CleanSchedPlus Deletes all Schedule+ data (free/busy, permissions, and .cal file) from the server.
/Safe Starts Outlook without extensions, preview pane, or toolbar customization.
/Recycle Activates an existing Outlook window.
/Folder Opens new window in “folder” mode (Outlook Bar and Folder List off).
/Profiles Shows MAPI Profiles dialog box regardless of the options setting on the Tools menu.
/Profile <profilename> Loads specified profile. (If your profile contains a space, Outlook may treat it as an invalid profile name when using this switch. Work around this by wrapping the profile name in quotes.)
/s <filename> Loads specified shortcuts file (.fav file).
/f <msgfilename> Opens <msgfilename>.
/p <msgfilename> Prints <msgfilename>. Same as /f except is associated with the print verb instead of open.
/Embedding <msgfilename> Used to open a .msg file as an OLE embedding. Standard OLE command-line argument.
/c <messageclass> Creates a new item of the specified message class (Outlook forms or any other valid MAPI form).
/a path:\<filename> Opens a new e-mail message with the specified file attached.
/importprf <path\.prf filename> Creates an Outlook profile based on the information in the specified .prf file.
/cleanprofile Removes invalid profile keys and regenerate default registry keys.