Backing up your Outlook 2013 calendar is as simple as exporting the data to a file. Choose between two types of export files: PST (Personal Folders) or Comma Separated Values, or CSV for short. PST files are specific to Outlook, whereas CSV files can be imported into Outlook as well as other programs, like Excel. If your calendar contains recurring entries, you must export as a PST file.
During the export process, you can choose to filter the exported data.
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Back Up Your Outlook Calendar
Click the "File" tab, choose "Open & Export" and select "Import/Export."
Pick the second option, "Export to a file" and then click "Next."
Select "Outlook Data File" (PST), and click "Next." Remember, if you have recurring meetings or appointments on your calendar, you must choose this option.
Pick "Calendar" to export only the calendar, and then "Next." For IMAP setup, such as for Gmail, "Calendar" will display as "Calendar (This computer only)." Click on your name at the top of the hierarchy list to choose the entire mail file.
Click "Browse" to navigate to your preferred backup location. Choose one of the three options available to manage the export of duplicate items. Press "Finish."
Export Filtered Data
Filter your exported data by clicking the "Filter" button, after selecting "Calendar."
Filter data by keyword, date or meeting attendee. Click "OK" after setting the filters you want.
Click the "More Choices" tab in the dialog box to filter by Category, item size or whether a calendar item contains attachments. Press "OK" when filter choices are complete.
Always back up your data before any computer upgrades or software installation.
Exported CSV files import easily into other Office programs like Excel or Word, or into database and reporting programs like Microsoft Access.
Save files to specific locations where search and retrieval are easy. Since Outlook items often contain sensitive information, the saved file location should be private. Finally, adding the date to the end of the file name prevents confusion about which backup to restore.