Reminders in Outlook 2007 not working

Is needed in order to help you more, has this worked before then stopped working?

Have you moved from 2003 to 2007?

Has your exchange server been updated from 2003 - 2000 to either 2003 or 2007?

to use a switch goto run then type in outlook.exe /withruleneeded

Try the below commands but post back answers to the questions?

Command-Line switch Purpose
------------------- -------

/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 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 Loads specified shortcuts file (.fav file).

/f Opens .

/p Prints . Same as /f except is associated with the print verb instead of open.

/Embedding Used to open a .msg file as an OLE embedding. Standard OLE command-line argument.

/c Creates a new item of the specified message class (Outlook forms or any other valid MAPI
form).

/a path:\ Opens a new e-mail message with the specified file attached.

/importprf Creates an Outlook profile based on the information in the specified .prf file.