1. Check to see if the events were saved:

• Click View > Change View > Agenda to check to see if the events were properly saved once you were finish.
• If you can’t locate your appointments, make sure that you have selected the correct calendar folder in the Navigation Pane.
• Verify that the dates you are looking for are visible on the Calendar view.

2. Confirm that recurring events weren’t modified or deleted:

• Click View > Recurring > to check if the recurring event was standardized or deleted.
• If modified, correct the recurrence pattern as needed and click Save and Close.

3. Check for syncing issues:

• Make sure the time zone is correct.
• If applying Outlook to an Exchange account, confirm that Outlook is configured in Cached Exchange Mode.
• Check for duplicate events.