follow these steps:
1. Check Default Calendar:
- Go to Settings > Calendar > Default Calendar on your iPhone.
- Make sure the default calendar is set to your Outlook calendar.
2. Add Outlook Calendar Account:
- Go to Settings > Mail > Accounts > Add Account on your iPhone.
- Choose Outlook.com and sign in with your Outlook credentials.
3. Sync Calendars:
- Ensure that Calendars are enabled for your Outlook account under Settings > Mail > Accounts > [Your Outlook Account].
4. Create Event in Correct Calendar:
- When creating an event on your iPhone, double-check that the event is being added to your Outlook calendar.
- While adding an event, tap Calendar and select your Outlook calendar.
5. Check Permissions:
- Make sure you have the necessary permissions to sync changes from your iPhone to your Outlook calendar.
- Go to Settings > Calendar > Accounts > [Your Outlook Account] > Calendar and ensure it is toggled on.
6. Restart Syncing:
- Turn off calendar syncing for your Outlook account in Settings > Mail > Accounts > [Your Outlook Account], wait a few minutes, and turn it back on.
If these steps do not resolve the issue, you may need to check your Outlook app settings or contact support for more specific troubleshooting.