Cleaning Up Outlook Calendar First open Outlook Then click the File tab from the top left corner of the screen info Now click the Tools Title and select the Mailbox cleanup option
Open Outlook Click the File tab from the top left corner of the screen info Click the Tools Title and select the Mailbox cleanup option Click the View option in the Calendar Go to the Current View group click Change View then click List Choose Item List then to select all
Cleaning Up Outlook Calendar
Cleaning Up Outlook Calendar
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How to clean up your Mailbox via the Windows Outlook desktop client Next set the Select available columns from to All Appointment fields
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Cleaning Up Outlook Calendar

How to delete or remove old appointments in Outlook?

Using Outlook's Clean Up Tool

Cleaning Up Outlook Calendars | Records Management Services

Deleting or finding large Calendar items - MSOutlook.info

How to delete or remove old appointments in Outlook?

Using Outlook's Clean Up Tool

https://www.youtube.com/watch?v=W2NMuAgGFoo
This video walks you through cleaning up your Outlook calendar

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Manually click to select the old appointments and right click on them Then click Delete from the right clicking menu Or you can just press the Delete key on

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1 Navigate to the calendar in the navigation lower left 2 This activates your search tab 3 Go to the Advanced Tab in the popup 4 In

https://www.msoutlook.info/question/find-and-delete-large-calendar-items
A good approach would be to change your Calendar view to the List view add the Size column and then click on the Size column to sort by size

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To delete all of the calendar entries click on the top entry or any entry and press Ctrl A to select all of the entries in the list
Do one of the following Open Outlook Click Calendar from the Left side menu of the window Right click on the Calendar you wish to remove A This set of best practices offer practical tips on how to check the size of your Outlook mailbox and calendar and then clean it up to better capture and store
Alternatively you can right click and choose Delete in the drop down menu To change the view back to the default simple click the Change View