If your calendar on Microsoft Outlook has become a disorganized mess, you might want to reset it and start again with a clean sheet. This can be quicker than trying to remove or edit individual events and appointments, particularly if your calendar covers several years. Although Microsoft Outlook doesn't include a specific reset function, the program does allow you to reset and restore the calendar by deleting all items.
Step 1
Launch Microsoft Outlook.
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Step 2
Click "Calendar" under "My Calendars" in the left-hand navigation pane.
Step 3
Click the "View" tab in the main program menu.
Step 4
Click "Change View" in the "Current View" group.
Step 5
Click "List." This displays a list of all your calendar items in the main program pane.
Step 6
Click anywhere in the item list. Press the "Ctrl" and "A" button on your computer keyboard. This selects all items in the calendar list.
Step 7
Press the "Delete" button on your computer keyboard. This resets the calendar by deleting all items.