- Check the Options menu
Check the settings in the calendar's options and make sure the display time period is set for the required range.
- Check the data source
Confirm that the data displaying in the calendar is from the correct location, including another device, Outlook, or an email account.
- Check synchronization reliability
Make sure that the calendar is connected properly and that the information is being successfully synced across devices.
- Check compatibility
Ensure that the application is compatible with the Microsoft calendar platform by checking for any technical updates or patches.