Unable to update calendars iPhone Exchange

Last Updated on Jun 30, 2022

Manage Your Calendar from any of your Apple Devices to another device, for example, Create an Event on your iPhone and View or Access it on your Mac or Other Apple devices like iPad that is signed in with the same Apple ID. That’s called iCloud Calendar Syncing. Here are the troubleshooting solutions for iPhone, iPad, iPod Touch, Or Mac Apple Device Not Syncing Calendar across the iCloud account.

I have observed that people are facing problems with the calendar not syncing on iPhone and iPad. The problem is when they set or update any event in the calendar on a particular iPhone the iCloud is unable to propagate the same in other iPhones or iPad with the same Apple ID.

However, this issue occurs sometimes due to a disturbance in syncing between iPhone and iCloud. Or also there is trouble in syncing and authentication because of errors. But it is not a big deal we can resolve by some responsive techniques. Let’s see and fix your iPhone 11 Pro Max, iPhone XS Max, XS, XR, X, 8/8 Plus, iPhone 7/7 Plus, iPhone 6S/iPhone 6S Plus/6/6 Plus, iPad, Mac.

To Sync Google Calendar, Outlook, Microsoft Exchange, and Outlook Calendar to iCloud, you need to sign in to your account on your iPhone and Enable Sync Calendar option.

We can add a new Calendar on iPhone, iPad

• Go to the Settings app > Account & Passwords > Add Account > Other > Add CalDAV Account.
• Or Settings > Account & Passwords > Add Account > Add Mail Account > Enter Account Details > and Tap on added Mail account (Enable Calendar sync toggle). Suppose Google Gmail account with Google Calendar

• iCloud Calendars Are Not Syncing to iPhone, Mac, iPad
  • Why is my Calendar Not Syncing on my iPhone?
  • 1: Reboot iPhone/iPad
  • 2: Check to Sync is Enabled in Settings
  • 3: Turn off And ON the Calendar Sync
  • 4: Change Calendar Settings: Sync Events For Selected Time
  • 5: Change Default Calendar: Select That You Want Sync
  • Fix 6: Sync iCloud Calendar to mac: Events, Holidays, and More
  • Fix 7: Sync Other Internet Accounts On Mac Calendar: iCloud, Microsoft Exchange, Google, Yahoo, AOL
  •  How do I force my iPhone to sync calendars?
  • How do I get my calendar on my iPhone to sync with my computer?
  • How do I get my iPhone and iPad calendars to sync?
  • How do I resync my Calendar?
  • iPhone Calendar not syncing with Mac
  • Why has my Outlook calendar stopped syncing with my iPhone?

iCloud Calendars Are Not Syncing to iPhone, Mac, iPad

Why is my Calendar Not Syncing on my iPhone?

If the iCloud Calendar not syncing across the iPhone, iPad, or Mac, try the below solutions to fix it.

Make Sure VPN is Turned off or Uninstall VPN. See, How to Turn off VPN on iPhone, Turn off VPN on Mac.

1: Reboot iPhone/iPad

Our Prior Method to solve any issue is rebooting the device and same we will try to solve the calendar not syncing too.

For iPhone 8, 8 Plus, iPhone X, XS, XS Max, iPhone XR/11 Pro/Max:

• Step 1: Press and instantly release the volume up key.
• Step 2: Press and instantly release the volume down key.
• Step 3: Finally press and hold the side key until the Apple logo appears on the screen.

Hard reboot For iPhone 6S and earlier iPhone models:

• Just press and hold the power key and home button for a while until the Apple logo appears on the screen.

For iPhone 7 and iPhone 7 Plus:

• Press and Hold the side Button and Volume Down button simultaneously.

2: Check to Sync is Enabled in Settings

• Step 1: Go to Settings.
• Step 2: Tap on Apple ID Name.

• Step 3: Click on iCloud.

• Step 4: Toggle on Calendars. if it’s Already enabled then make sure Your iCloud account is signed in with the same Apple ID, Also Disable The Toggle and Re-Enable.

Force Close Calendar app on iPhone/iPad after Enable Calendars Syncing option from iCloud settings. Re-launch App or Wait for Syncing is complete from the internet.

• Also, Calendar Syncing speed depends on your internet connection speed. A slow internet connection should wait for more time.

3: Turn off And ON the Calendar Sync

This method can also be very helpful and simple. Few steps you have to follow.

• Step 1: Launch “Settings”.
• Step 2: Tap on your Name’s Banner.
• Step 3: Open iCloud.
• Step 4: Find the calendar Under Apps Using iCloud and toggle off it to Sync Stop.

Force close all the tabs on iPhone and after a few minutes follow the above same process and turn on the calendar sync. It may take a few minutes to sync across all your devices so sit back and relax.

4: Change Calendar Settings: Sync Events For Selected Time

Sometimes by mistake, you have not been permitted to sync all events so it might be the reason that iPhone or iPad calendar not syncing with your events. Let’s take a look at how we can update the settings.

• Step 1: Go to “Settings”.
• Step 2: Open the calendar and tap on “sync”.

• Step 3: Select Time Duration for All Events For Specific Month’s Events.

5: Change Default Calendar: Select That You Want Sync

One of the silly mistakes we make is, to sync the events with iCloud one must require selecting the default calendar otherwise iCloud will not respond to saved events on other iPhones or iPads. iOS can only sync over the default calendar, not local calendars.

• Step 1: Go to “Settings”.
• Step 2: Open Calendar and select the default calendar.

Fix 6: Sync iCloud Calendar to mac: Events, Holidays, and More

Mac Users can access iPhone’ iCloud Calendar Events for Reminder, Holidays on your Other Apple Devices that are signed in with the same Apple ID. Also, We can access New Events that are created on Mac to iPhone, iPad. Make sure all of your Apple devices have permission to use iCloud Calendar. First Check iCloud Calendar Syncing is enabled for iPhone, iPad, [Settings app on iPhone/iPad > Tap on Profile Name > Tap on iCloud > Scroll to Calendar toggle and enable it].

Read more: best Calendar Apps for Mac

Now on your Mac, Also Enable iCloud Calendar Sync from Mac System Preferences.

1. Go to the Apple Logo () from the top Mac Menu.
2. Click on the System Preferences option.

Fix 7: Sync Other Internet Accounts On Mac Calendar: iCloud, Microsoft Exchange, Google, Yahoo, AOL

1. Open Calendar app on Mac.
2. From top Mac Menu > Calendar > Add Account..

and That’s it.

 How do I force my iPhone to sync calendars?

Solution 1: Manually Refresh the Calendar on iPhone, iPad?

Sometimes we need to refresh the calendar app manually, to stay up to date. If you’re facing issues with syncing the iCloud Calendar, go with the below steps.

1. Open the Settings app on the iPhone.
2. Tap on the Calendar app.
3. Drag down the screen to refresh the calendar, as you do with Instagram or Facebook to refresh the feed.

Solution 2: Make Sure Cellular Data is Enabled for Calendar

To continuously sync the Calendar App on any Apple device, they must be connected to the internet connection.

1. Go to the Settings App.
2. Tap Cellular Data.
3. Scroll down to Calendar App and make sure it is enabled.

Apart from this, you can also try the above solutions to get it fixed.

How do I get my calendar on my iPhone to sync with my computer?

Using iTunes you can let the Calendar of iPhone sync with the computer. Here’s how to do it.

1. Open iTunes on your PC.
2. Connect the iPhone or iPad to the PC via USB cable.
3. Select the device and from the sidebar choose Info.
4. Check the box of Sync Calendars and then you can select All calendars or selected calendars.
5. Now click on the Sync button in the lower-right corner.
6. Again under the Calendar section, follow the same for the third-party calendar software and do the same.

How do I get my iPhone and iPad calendars to sync?

The thumb rule to sync anything between Apple Devices is you should be using the same iCloud Account across the iPhone, iPad, iPod Touch, and Mac. So, ensure that the iCloud account is the same on the iPhone and iPad, and then follow these steps.

1. Go to the Settings App.
2. Tap on your name.
3. Select iCloud.
4. Toggle Calendars switch ON.

How do I resync my Calendar?

There is no specific setting or option provided in the iPhone to re-sync the Calendar, but disabling and re-enabling the Calendar might fix it.

1. Open the Settings App.
2. Tap on your name.
3. Choose iCloud.
4. Turn off the Calendars option.
5. Restart the iPhone.
6. Again follow the same steps, and enable Calendars from iCloud.

iPhone Calendar not syncing with Mac

Unless there are any bugs or software issues, the Calendar should work just fine with iPhone and Mac. It might be possible you’ve made mistake during the setup.

Solution 1: Check Internet Connection

To keep updating the calendars across the iPhone and Mac, they must be connected to the Wi-Fi or Cellular data, otherwise, neither Mac nor iPhone will be able to sync the changes easily. Try using Safari, if you can search anything on Safari then the internet is working correctly.

Alternatively, restart the Mac and iPhone both to rule out a minor bug that could affect the syncing issues. Doing this will quit the Calendar App completely and so you can re-launch it.

To Reboot iPhone,

For iPhone 8 or later,

• Press and quickly release the Volume Up button.
• Press and quickly release the Volume Down button.
• Press and hold the Side button until the Apple logo shows up.

For iPhone 7, 7Plus,

• Press and hold the Volume down button and Power button for at least 10 seconds until the Apple logo appears.

For iPhone 6S, 6SPlus, or Earlier,

• Press and hold the Home button and Sleep/Wake button until the Apple logo shows up.

For Mac, MacBook,

• Click on the Apple logo on the top menu bar.
• Select Restart.

Solution 2: Verify the iCloud Account on iPhone and Mac

To sync the calendar across the Mac and iPhone, both the devices must be signed in with the same iCloud account.

On Mac,

1. Close the Calendar app.
2. Click on the Apple
3. Select System Preferences.
4. Click on Apple ID.
5. Alternatively for macOS Mojave or earlier, Click Apple logo > System Preferences > iCloud.
6. You should see Apps on this Mac using iCloud, from the list, deselect Calendars and Reminders.
7. Close the window, and restart the Mac.
8. Again select the Calendars and Reminders from the same list.

On iPhone,

1. Go to the Settings App.
2. Tap Calendar
3. Hit Default Calendar.
4. Select a calendar beneath the iCloud section to make it default.

Why has my Outlook calendar stopped syncing with my iPhone?

Solution 1: Connect to Wi-Fi Or Switch to Mobile Data

If you’re using Cellular Data on your iPhone then switch to a Wi-Fi connection. Outlook requires stable and fast internet speed to sync across the servers and devices.

Alternatively, the Airplane Mode must be disabled to operate this.

if your WiFi drops the internet connectivity, then turn off WiFi and Turn on Mobile data or Switch to your Own Private WiFi network, if you are using Public.

Solution 2: Disable Low Power Mode

Low Power Mode tends to reduce battery usage and also stops the background activity like Syncing.

• Open the Settings app > Battery > Disable Low Power Mode.

Solution 3: Update Outlook App

Sometimes the outdated apps won’t perform correctly, in such cases, it’s pretty common to have this type of errors.

1. Visit the App Store.
2. Click on the Profile icon and Update the Outlook App.

Solution 4: Set Outlook as Default Calendar

Many users have more than one calendar added to their iPhones. Therefore, you need to clarify which Calendar do you want to use as default. Here’s how to do it.

Go to the Settings app > Calendar App > Tap Default Calendar. Select the Outlook Calendar to set it as default.

Solution 5: Reboot iPhone

If none of the solutions works for you, then force restart the iPhone. We’ve mentioned the steps to force reboot the iPhone depending on the iPhone models. Check the above section.

Also, Read iTunes not Syncing Music to iPhone.

Never miss the chance to get upcoming popular days and events for personal and business use. First of all fix Calendar Syncing problems for accessing your Calendar data to other Apple Devices (iPad, iPod Touch, Mac).

HowtoiSolve Staff

Jaysukh Patel is the founder of howtoisolve. Also self Professional Developer, Techno lover mainly for iPhone, iPad, iPod Touch and iOS, Jaysukh is one of responsible person in his family. Contact On: [OR]

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