11 Fixes For iPhone Calendar Not Syncing With Outlook Issue

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Outlook Calendar Not Syncing

Additionally, the Outlook calendar software connects to third-party calendar services such as Microsoft Office 365, Google Calendar, and Apple Calendar. This enables users to organize their events more effectively. However, a large number of customers encounter the problem of “Outlook calendar not syncing with iPhone”.

If your Outlook calendar is not synchronizing, this article can assist you in resolving the issue.

Also Check, How to Fix:- Outlook Calendar Not Showing Appointments

Why is Your Outlook Calendar not Syncing with iPhone?

Although there are many possible causes for the Outlook Calendar Not Syncing with iPhone issue. Several of the most frequent reasons are mentioned below; take a quick look at them all at once:

  • If you choose the incorrect calendar while adding an event, your Outlook calendar may not sync with your iPhone.
  • When data is not synchronized properly to the server
  • Perhaps your Outlook account is not properly linked to an iPhone.
  • The default calendar on iOS is set improperly.
  • A setup of Outlook’s settings on your iPhone that is incorrect

Check these Points Before Fixing

  • Ascertain that you are using the most recent version of Outlook.
  • Regularly update your gadget to prevent technical problems.
  • Establish a connection to the network and verify its working condition. Occasionally, a bad network connection may also be the cause. As a result, the outlook calendar cannot be synced. Restart the router if required.
  • Ascertain that only the administrator has the authority to deny or grant calendar permissions.
  • Only one device should be used to reject or accept the calendar.

Read Also: How to share MS Outlook Calendar?

Solutions for Outlook Calendar not Syncing with iPhone Problem

Given below are some of the ways to fix the issue of Outlook Calendar Not Syncing With iPhone:

1. Restart Your iPhone

Occasionally, restarting the operating system is the easiest method to resolve the most frequent issue. Additionally, it works to resolve the Outlook Calendar Not Syncing With iPhone issue. You must fully power down the iPhone and then turn it back on.

2. Switch to Wi-Fi

Sync the Outlook calendar correctly with the iPhone. For the same, the data must first go through the internet servers and then be re-downloaded to the other device. Your iPhone may not sync with your computer when connected to a cellular network.

Thus, connect it to a Wi-Fi signal and see whether that works. Proceed next if this does not resolve the Outlook calendar not synchronizing on iPhone issue.

3. Disable Low Power Mode

When your iPhone is in Low Power Mode, the majority of background operations, particularly downloads and data, may not sync across services. Therefore, if your iPhone’s battery becomes low, charge it first to immediately deactivate this option.

Even though you can shut it off manually by heading to “Settings,” choosing the Battery tab, and then clicking on the Low Power Mode toggle switch. After disabling the option, your Outlook calendar may sync with your iPhone.

4. Ensure that You’re Using the Appropriate Calendar on Your iPhone

If your iPhone calendar is not synchronizing with Exchange or Outlook, you must check twice how you create new events in the iOS Calendar app.

While adding a new event, select the Calendar tab. This would verify the name of your Outlook calendar. You may have accidentally saved events to the incorrect calendar, resulting in Outlook Calendar Not Syncing.

5. Exit All Running Apps on the iPhone

Sometimes, applications running on the iPhone may cause issues with data synchronization. As a result, you can easily resolve this problem.

For the same, you will have to fully quit the program and then open just the Outlook Calendar app on your iPhone. Sync may have taken place.

6. Verify that You are Logged into an Outlook Account Correctly

To verify it, refer to the following points:

  • Navigate to the “Settings” menu on your iPhone.
  • Select the “Passwords and Accounts” tab now.
  • If Outlook is not shown in the list of accounts, touch “Add Account” to successfully add it and then enable it to sync the calendar and get notifications about future events.

7. Disable Airplane Mode

If you activate Airplane Mode on your iPhone while viewing a movie or flying, you can be certain that no data will be synced, since your iPhone will be unable to connect to the necessary internet servers.

That is why, if your Outlook Calendar is not syncing with your iPhone, check to see whether Airplane Mode is on or disabled. If you discover it enabled on your device, deactivate it immediately and then connect it to a cellular or Wi-Fi connection, followed by a brief wait.

This may resolve the issue. However, if the calendar is still not synchronizing, continue reading.

8. Update the Outlook App on Your iPhone

An out-of-date Outlook application may contribute to the Outlook calendar not syncing correctly. Occasionally, it is essential to verify that applications continue to function correctly after iOS operating system upgrades.

As a result, check for app updates immediately by following the instructions below:

  • On your iPhone, open the App Store.
  • Tap the “Updates” button, then drag the list of applications to the bottom and release your finger.
  • Install any available updates immediately and then attempt to sync your Outlook calendar on your device.
  • This may be effective in resolving such a situation. However, if it is not, go to the next solution.

9. Verify the Permissions for Outlook

Even if you are correctly signed into your Outlook account but are still unable to sync the calendar, it is quite likely that you have not given the service full access to your iPhone.

As a result, in order to prevent the service from being accessed, you must perform the following instructions:

  • Navigate to the “Settings” menu on your iPhone.
  • Select “Passwords and Accounts” from the drop-down menu.
  • Select Outlook and toggle the Calendars toggle switch to the on position.

10. Verify the Default Calendar on Your iPhone

To determine this, go to Settings > Calendar > Default Calendar. Default calendar, that is, the Outlook calendars, may be included in the Default Calendar section.

The calendar with the checkmark next to it is the one that will be used to save new events made on your iPhone. Ascertain that your chosen Outlook calendar is ticked.

11. Sync iTunes Manually

If your iPhone is running the newest version of iOS and the Outlook software, calendar data should be synchronized through the cloud in the background. As a result, sync your data through iTunes. Follow these syncing iTunes steps carefully:

To begin, connect your iPhone to your computer using a USB connection.

Next, launch iTunes on your pc and go to Devices > iPhone > Info > Calendars > Sync calendars from > Outlook > All calendars > Sync calendars from > Outlook > All calendars > Apply


Outlook calendar not syncing problem with iPhone can arise at any time. You will have to implement the above techniques to resolve the issue.

However, if you fail to do so, you can approach our Outlook support team. We have trained professionals well-versed in all types of technologies.

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