How to Connect Office 365 calendar to Apple iPhone?

Mark Regan
Published: June 27th, 2025 • 6 Min Read

Suppose you are on a vacation and suddenly you get an urgent work call from your client asking for the information of the meeting. Now, you don’t bring your work laptop where you manage all your calendars in Office 365. Now, how can you get your calendar on your mobile, especially iPhone. Don’t panic, we have the solutions for this. Here, we will provide you two easy methods to sync Microsoft 365 calendar to iPhone.

You know very well that Office 365 is a robust productivity suite that provides cloud services. This suite provides you various tools for collaboration including Microsoft 365 calendar. It is a scheduling and time management tool present within the Outlook application. With the help of this utility businesses can easily manage appointments, schedule meetings and share them across the cloud platform.

In the iPhone, there is a calendar app already installed in the mobile. The purpose is the same : managing your calendars and working with iCloud, Google, and Microsoft Exchange. The calendar app is also integrated with Siri. There are some users who want to add Office 365 calendar to apple calendar for several reasons which we have mentioned below.

Reasons to Sync Microsoft 365 Calendar with iPhone

Whenever you want to sync your data like calendars in your mobile. There can be many reasons for this personal as well work. So, here we will mention common reasons.

Syncing your work or personal calendar allows you to access your data from anywhere and anytime.
When your computer receives alerts and reminders for meetings or events. You will automatically get the notifications on your iPhone.
Your calendar is consistent in all the devices, so there are no duplicate entries and missed events.
If your Office 365 calendar is connected with your mobile, then you can instantly respond and check the meeting without opening your laptop or PC.
Professionals who often do work from home, syncing their calendar with their iPhone is very helpful.
You can also integrate your calendar with other iPhone applications like Siri, Maps and other iOS apps.

Hence, it is very beneficial to sync your Office 365 calendars with your mobile. Now, how can you do it? It is simple, just follow the methods below to easily get your calendars on your iPhone.

Note: iPhone uses Exchange ActiveSync protocol to sync your Microsoft 365 calendar. It is a real time syncing protocol to ensure that the changes you made in your phone or desktop would also reflect in all your connected devices.

Add Office 365 Calendar to Apple Calendar by iPhone Settings

In order to sync your Microsoft 365 calendars with the iPhone you need the help of the Exchange account. Below are the proper steps of the process.

On your iPhone, go to the Settings app.
Slide down and click on the Calendar option.
Select the Accounts, then Add Account button.
Choose the Exchange option and enter your Microsoft 365 email address and the password.
Enable Calendars and save the changes.

Sync Microsoft 365 Calendar with iPhone by Outlook App

iPhone does not allow you to sync iPhone calendar with Outlook App. however, if you install the Outlook app in your iPhone and connect with your Office 365 account. Then, you will get your calendars. This process is easier.

First install the MS Outlook app in your iOS mobile.
Sign in the application using the Microsoft 365 email address and password.
Then, click on the Calendar option below to get your calendars.

So, these are the possible solutions to add Microsoft 365 calendar to Apple calendar. The process of syncing is simple and free, issues can arise when connecting your calendar.

Problems with Syncing Office 365 Calendar with iPhone

Poor internet connectivity, outdated iOS, or misconfigured settings, make it delay in appearing your events or they may go missing.
If you use both the methods to sync same calendars then it will result in duplicate entries and clutter in your calendar.
Using wrong credentials or blocking multi-factor authentication prevents you from synchronizing your calendar.
Some users will get confused when you merge your personal and professional calendars in the same device.
There is a huge risk of organization security, when you sync the organization-managed Microsoft 365 calendar in your personal iPhone. If your phone is lost/stolen, does not include device-level encryption or you are using unapproved apps to access your calendar. There is a high chance of exposing your sensitive information.

Thus, you may come across several issues during or after syncing your Microsoft 365 calendar with iPhone. Because of these problems you may lose your important calendars. Especially when you are unable to sync your account or you are moving your business calendar events. So, before following the process. First, take the backup of the data.

Why Need to Take Backup of Office 365 Calendars?

Syncing your data is not an easy task, even professionals face a lot of problems. As we mentioned the possible issues in syncing your calendar. Taking a backup of your calendar can help you prevent these issues.

Therefore, professional softwares like BitRecover Office 365 Backup Tool will help you. This utility is especially created to save your entire Microsoft 365 mailbox without any issues. Here, you can easily download your emails, contacts, calendars and other data. Also, save them to different accounts and files like iCloud, Apple Mail, PDF, ICS, etc. this way you can easily access your calendars on your iPhone.

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Concluding Words

If you want to sync Microsoft 365 calendar with iPhone. We have provided you two manual ways. By following them you can easily sync your calendars. But before going through the process, make sure that you backup your important data. So, if something happens in the syncing process, you can retain your data.

Read More:

How to Migrate Emails from Office 365 to iCloud?