Using Classic Outlook on Windows for personal email, calendar, and contact management
I understand how important these Journal entries are, especially since they contain a significant amount of your history.
Journal entries are stored in a separate Journal folder rather than directly in the Calendar. Please switch back to classic Outlook, select Folders from the Navigation Bar, and check the Journal folder. Microsoft confirms that existing Journal entries can be accessed from this location. Track actions in Journal
If the entries are not there, select File > Open & Export > Open Outlook Data File, then check for an older .pst or archive.pst file under Documents\Outlook Files. The entries may have been stored locally or moved there by AutoArchive.
Please make a backup copy of any .pst file before importing or repairing it.
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