These switches allow you to perform common maintenance tasks for Outlook and are incredibly useful for clearing up a host of Outlook related issues. In later articles I will show you some other Microsoft Office switches for the rest of the Office applications.
Outlook 2003 is normally installed in C:\Program Files\Microsoft Office\OFFICE11. (If you install your applications on another partition use the drive letter for that partition.)
Open a CMD window by typing cmd in the Run dialog box and than navigate to the path above. To do this you will use the CD command which will look like this " cd Program Files\Microsoft Office\OFFICE11"(Without the quotes). Run Outlook.exe with the appropriate switch.
To use switches, at the Start menu, Run command type:
Outlook /switch
Sometimes it will be necessary to use the full path to Outlook, so the command line you will type will be:
Starts Outlook and deletes client-based rules.
/cleandmrecords
Deletes the logging records saved when a manager or a delegate declines a meeting.
/cleanfinders
Removes Search Folders from the Microsoft Exchange server store.
/cleanfreebusy
Clears and regenerates free/busy information. This switch can only be used when you are able to connect to your Microsoft Exchange server.
/cleanprofile
Removes invalid profile keys and recreates default registry keys where applicable.
/cleanpst
Launches Outlook with a clean PST(Personal Folder).
/cleanreminders
Clears and regenerates reminders.
/cleanrules
Starts Outlook and deletes client- and server-based rules.
/cleanschedplus
Deletes all Schedule+ data (free/busy, permissions, and .cal file) from the server and enables the free/busy information from the Outlook Calendar to be used and viewed by all Schedule+ 1.0 users.
/cleanserverrules
Starts Outlook and deletes server-based rules.
/cleansniff
Deletes duplicate reminder messages.
/cleansubscriptions
Deletes the subscription messages and properties for subscription features.
/cleanviews
Restores default views. All custom views you created are lost.
For Outlook 2007 Please visit :http://office.microsoft.com/en-us/outlook/HP012185891033.aspx?pid=CH100788811033