Use the switches listed in this section for diagnostic purposes.
The final switches in this group are those that reset Outlook to use default settings, including ResetNavPane , which removes all of your shortcuts from the Navigation bar and resets the buttons to their original positions .
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/CheckClient ” Prompts for the default manager of email, news, and contacts. Use this when another email client is set to default and Outlook doesn't ask whether it should be the default.
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/CleanClientRules ” Starts Outlook and deletes client-based rules. Works with all mail account types.
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/CleanDmRecords ” Deletes the logging records saved when a manager or a delegate declines a meeting (Exchange Server only).
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/CleanFinders ” Removes Search Folders from the Microsoft Exchange Server store.
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/CleanFreeBusy ” Clears and regenerates free/busy information. This switch can be used only when you're able to connect to your Microsoft Exchange server.
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/CleanProfile ” Removes invalid profile keys and re-creates default Registry keys where applicable .
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/CleanPST ” Launches Outlook with a new Personal Folders file ( .pst ). The existing PST is not affected; it's just replaced in the profile for one use.
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/CleanReminders ” Clears and regenerates reminders.
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/CleanRules ” Starts Outlook and deletes client- and server-based rules. Use with care ”this switch deletes all existing rules.
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/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.
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/CleanServerRules ” Starts Outlook and deletes server-based rules (Exchange Server only). Use with care ”this switch deletes server-based rules.
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/CleanSniff ” Deletes duplicate reminder messages.
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/CleanSubscriptions ” Deletes the subscription messages and properties for subscription features.
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/CleanViews ” Restores default views. Use with caution; this switch deletes all custom views you created. Use with care ”this switch deletes all views, including any custom views you've created.
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/ImportPRF prffilename ” Launches Outlook and opens/imports the defined MAPI profile ( *.prf ). If Outlook is already open when you run the command, the new profile is imported on the next clean launch.
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/NoCustomize ” Starts Outlook without loading outcmd.dat (customized toolbars ) and *.fav files. Use this to troubleshoot problems when Outlook hangs or crashes when you first start it. If Outlook loads using this switch, delete outcmd.dat .
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/NoExtensions ” Starts Outlook with extensions turned off, but listed in the Add-In Manager.
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/ResetFolderNames ” Resets default folder names (such as Inbox and Sent Items) to the default names in the current Office user interface language. This is used when you connect to an Exchange Server which uses a language different from your Office installation.
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/ResetFolders ” Restores missing folders for the default delivery location. Use this switch if you use OWA to access your mailbox and accidentally delete a folder.
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/ResetNavPane ” Clears and regenerates the Navigation Pane for the current profile. All shortcuts on the shortcut bar are deleted.
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/Safe ” Starts Outlook without extensions, Reading Pane, or toolbar customization.
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/Safe:1 ” Starts Outlook with the Reading Pane off. Use this if you have a message in the inbox selected and it causes Outlook to hang or crash.
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/Safe:2 ” Starts Outlook without checking mail at startup. Use when you don't want Outlook to check for new email, but don't want to disable automatic checking in Tools, Send/Receive.
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/Safe:3 ” Starts Outlook with extensions turned off, but listed in the Add-In Manager.
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/Safe:4 ” Starts Outlook without loading Outcmd.dat (customized toolbars) and *.fav files.
