If your iCloud Contacts, Calendars or Reminders aren't syncing

Find out what to do if you need help. For example, find out what to do if the changes you've made on one device didn't appear on all of your devices.

Try these steps first

Make sure iCloud Contacts, Calendars and Reminders are available. If there are any issues, try again later when they've been fixed. If there aren't any issues, try these steps.

Remember to back up your contacts, calendars and reminders, so you don't lose anything. 

Important: Upgraded reminders aren't compatible with earlier versions of iOS or macOS. Shared reminders are also not accessible to users with earlier versions of iOS and macOS, until they've upgraded.

After each step, see if you still need help:

  1. Check for updates to your iPhone, iPad, iPod touchMac or PC. To use iCloud, your devices will need to meet the necessary system requirements
  2. See if the date and time settings on your iPhone, iPad, iPod touch, Mac or PC are correct. 
  3. Make sure you're signed in to iCloud with the same Apple ID on all of your devices and check your settings.
    • On your iPhone, tap Settings > [your name] > iCloud. Check your Apple ID and make sure you've turned on what it is you want to update (Contacts, Calendars or Reminders).
    • On your Mac, choose Apple menu  > System Preferences, click Apple ID and then click iCloud. If you’re using macOS Mojave or earlier, choose Apple menu > System Preferences and then click iCloud. Check your Apple ID and make sure you've selected what it is you want to update (Contacts, Calendars or Reminders).
    • On your PC, open iCloud for Windows. Check your Apple ID and make sure you've selected what it is you want to update (Mail, Contacts, Calendars and Tasks).
  4. If you sign in to third-party apps with your Apple ID, protect your account with two-factor authentication and use an app-specific password. If your devices can't be updated to iOS 9 or OS X El Capitan or later, you can set up two-step verification instead.
  5. Open Safari and go to www.apple.com to check your connection. If you can’t open the page, get help connecting to the Internet
  6. Open a secure website, such as your Apple ID account page, to see if you can access port 443. If the website won't load, contact your Internet service provider for help. Safari needs access to port 443 to update your information in iCloud.
  7. Keep your data within the limits. If you go over the limit, your data won't be kept up to date.

If you still need help, try the below steps for your device.

Try the steps for your device

Choose your device and find out what to do next.

iOS 13 and iPadOS

After each step, check your contacts, calendars or reminders. 

Refresh your contacts and calendars

To refresh your contacts, open Contacts and swipe down on the list.

To refresh your contact groups:

  1. Open the Contacts app.
  2. Tap Groups in the upper-left corner.
  3. Swipe down on the list to refresh your groups.

To refresh your calendars:

  1. Open the Calendar app.
  2. Tap the Calendars tab.
  3. Swipe down on the list to refresh your events.

Set iCloud Contacts, Calendars or Reminders as your default

If your contacts, calendars and reminders are in iCloud, then iCloud will automatically update your information. See if your information is in iCloud or a third-party account, such as Google or Yahoo. Then change your default account to iCloud. Changing your default account to iCloud will not move your existing information from a third-party service to iCloud.

To see which account your contacts are in:

  1. Open the Contacts app and tap Groups in the upper-left corner.
  2. Deselect the All [account] option for any third-party account, such as Gmail or Yahoo.
  3. Make sure All iCloud is selected.
  4. Tap Done to see your list of contacts. If you can't see the contact you're looking for, it's stored in another account.
  5. If you have a copy of your contacts from a third-party service in vCard format version 3.0 or later, you can import the contacts into iCloud.

Set iCloud as the default account for your contacts in iOS 8 or later:

  1. Tap Settings, then Contacts.
  2. Tap Default Account.
  3. Select iCloud.

To see which account your calendars are in, open the Calendar app and then tap the Calendars tab. 

Set an iCloud calendar as the default calendar:

  1. Tap Settings, then Calendar.
  2. Tap Default Calendar. 
  3. Tap a calendar under iCloud to make it your default calendar.

Set an iCloud reminders list as the default list:

  1. Tap Settings, then Reminders.
  2. Tap Default List. 
  3. Tap a list under iCloud to make it your default list.

Check your app settings

Make sure your iCloud Contacts and Calendars are set to appear in the Contacts or Calendars app:

  • Open the Contacts app and tap Groups in the upper-left corner. Make sure All iCloud is selected.
  • Open the Calendar app and tap the Calendars tab. Make sure all iCloud calendars are selected. 

Make sure your Reminders appear:

  1. Tap Settings, then [your name].
  2. Tap iCloud.
  3. Slide to turn on Reminders.

Change how often your calendars are updated:

  1. Tap Settings, then Calendar.
  2. Tap Sync.
  3. If All Events is selected, choose a specific timeframe instead, such as Events 1 Month Back. If a specific timeframe is selected, choose All Events instead. 
  4. Return to your Home screen. 
  5. Wait a few minutes, then open the Calendar app. Tap the Calendars tab and swipe down to refresh.

Since the iCloud Birthdays calendar is updated daily, you may not see changes to birthdays in the Calendars app until the following day.

Restart the Contacts, Calendar or Reminders app

  1. Close the app.
  2. Return to your Home screen.
  3. Wait a minute, and then open the app again. 

Turn off iCloud Contacts, Calendar or Reminders, and turn it back on

  1. Tap Settings, [your name], then iCloud. 
  2. Slide to turn off Contacts, Calendars and Reminders.*
  3. If you see your calendars or reminders on iCloud.com or any of your devices, you can choose Delete from My [device]. If not, choose Keep on My [device].
  4. Wait a few minutes, then turn on Contacts, Calendar or Reminders again.

* Local reminders will be deleted from your device, but your information won't be deleted from iCloud. After you've turned Reminders back on, your reminders will be re-synced to your device.

Restart your iPhone, iPad or iPod touch

Restart your device. Here's how to restart your iPhoneiPad or iPod touch.

iOS 12

After each step, check your contacts, calendars or reminders. 

Refresh your contacts, calendars and reminders

To refresh your calendars and reminders:

  1. Open the Calendar app.
  2. Tap the Calendars tab.
  3. Swipe down on the list to refresh your events and reminders.

To refresh your contacts, open Contacts and swipe down on the list. 

To refresh your contact groups:

  1. Open the Contacts app. 
  2. Tap Groups in the upper-left corner.
  3. Swipe down on the list to refresh your groups. 

Set iCloud Contacts, Calendars or Reminders as your default

If your contacts, calendars and reminders are in iCloud, then iCloud will automatically update your information. See if your information is in iCloud or a third-party account, such as Google or Yahoo. Then change your default account to iCloud.

Find out which account your contacts are in:

  1. Open the Contacts app and tap Groups in the upper-left corner.
  2. Deselect the All [account] option for any third-party account, such as Gmail or Yahoo.
  3. Make sure All iCloud is selected.
  4. Tap Done to see your list of contacts. If you can't see the contact you're looking for, it's stored in another account.
  5. You can import the contact from a third-party service into iCloud.

Set iCloud as the default account for your contacts in iOS 8 or later:

  1. Tap Settings > Contacts.
  2. Tap Default Account.
  3. Select iCloud.

Find out which account your calendars are in:

  1. Open the Calendar app. 
  2. Tap an event to open it.
  3. Tap the calendar name to see if the event is in an iCloud calendar.

Set an iCloud calendar as the default calendar:

  1. Tap Settings > Calendar.
  2. Tap Default Calendar. 
  3. Tap a calendar under iCloud to make it your default calendar.

Find out which account your reminders are in:

  1. Open the Reminders app.
  2. Tap the list name in the upper-left corner to view all your lists.
  3. Find out if the list is stored on your device or iCloud. Open a list and tap Edit. If you can see Sharing, then your list is in iCloud.

When you create a reminder, you can choose to store it in iCloud or on your iOS device.

Check your app settings

Make sure your iCloud Contacts and Calendars are set to appear in the Contacts or Calendars app:

  • Open the Contacts app and tap Groups in the upper-left corner. Make sure All iCloud is selected.
  • Open the Calendar app and tap the Calendars tab. Make sure All iCloud is selected. 

Change how often your calendars and reminders are updated:

  1. Tap Settings > Calendar, or tap Settings > Reminders.
  2. Tap Sync.
  3. If All Events or All Reminders is selected, choose a specific timeframe instead, such as Events or Reminders 1 Month Back. If a specific timeframe is selected, choose All Events or All Reminders instead. 
  4. Press the Home button. 
  5. Wait a few minutes. Open the Calendar app, tap the Calendars tab and swipe down to refresh.

Since the iCloud Birthdays calendar is updated daily, you may not see changes to birthdays in the Calendars app until the following day.

Restart the Contacts, Calendar or Reminders app

  1. Double-click the Home button to see your open apps.
  2. Find the app, then swipe up to close it.
  3. Press the Home button to return to your Home screen.
  4. Wait a minute, and then open the app again.

Turn off iCloud Contacts, Calendar or Reminders, and turn it back on

  1. Tap Settings > [your name] > iCloud. 
  2. Slide to turn off Contacts, Calendars and Reminders.*
  3. If you see your calendars or reminders on iCloud.com or any of your devices, you can choose Delete from My [device]. If not, choose Keep on My [device].
  4. Wait a few minutes, then turn on Contacts, Calendar or Reminders again.

* Local reminders will be deleted from your device, but your information won't be deleted from iCloud. After you've turned Reminders back on, your reminders will be re-synced to your device.

Restart your iPhone, iPad or iPod touch

Restart your device. Here's how to restart your iPhoneiPad or iPod touch.

Force sync Calendar data on Apple Watch

To force sync Calendar data on your Apple Watch:

  1. Open the Watch app on your iPhone and tap the My Watch tab.
  2. Tap General, then tap Reset.
  3. Tap Reset Sync Data.

Mac

After each step, check your contacts, calendars or reminders.

Refresh your calendars and reminders

You can refresh your calendars and reminders from the Calendars app:

  1. Open the Calendar app.
  2. Choose View.
  3. Refresh Calendars.

Since the iCloud Birthdays calendar is updated hourly, you may not see changes to birthdays in the Contacts or Calendars app for an hour.

Check your default Calendar, Reminders and Contacts account

If you store and edit your events in iCloud instead of another place, such as On My Mac, Exchange or Google, then iCloud will automatically update your calendars. If you use multiple accounts on your Mac, such as iCloud, Gmail and Yahoo, make sure iCloud is your default Calendar account:

  1. Open the Calendar app.
  2. Choose Calendar > Preferences.
  3. On the General tab, make sure one of your iCloud calendars is the default calendar.

After you've set up iCloud Reminders, you may need to quit and reopen Reminders on your Mac. Then make sure you set up your account correctly in Reminders:

  1. Open the Reminders app.
  2. Choose Reminders > Accounts.
  3. Click the iCloud tab and make sure you're signed in with your Apple ID.

If you store and edit your contacts in iCloud instead of another place, such as On My Mac, Exchange or Google, then iCloud will automatically update your contacts. If you use multiple accounts on your Mac, such as iCloud, Gmail and Yahoo, make sure iCloud is your default Contacts account:

  1. Open the Contacts app.
  2. Choose Contacts > Accounts.
  3. Click the iCloud tab and make sure you're signed in with your Apple ID. 

Turn off iCloud Calendar and iCloud Reminders, then turn it back on

  1. Quit the Calendar and Reminders apps.
  2. Choose Apple menu  > System Preferences, click Apple ID and then click iCloud. If you’re using macOS Mojave or earlier, choose Apple menu  > System Preferences and then click iCloud.
  3. Deselect Calendars and Reminders.* 
  4. Close System Preferences and wait about a minute.
  5. Choose Apple menu  > System Preferences, click Apple ID and then click iCloud. If you’re using macOS Mojave or earlier, choose Apple menu  > System Preferences and then click iCloud. 
  6. Select Calendars and Reminders.
  7. Open Calendar and Reminders.

* Local reminders will be deleted from your device, but your information won't be deleted from iCloud. After you've turned Reminders back on, your reminders will be re-synced to your device.

Restart your computer

After you've restarted your computer, see if the issue has been fixed. 

iCloud.com

If you can't see all your updates or have a different issue, try these steps on iCloud.com:

  1. Update your browser and clear the cache.
  2. If you can't see updates from other devices, open another app on iCloud.com, such as Mail. Then go back to the Contacts, Calendar or Reminders app.
  3. Sign out of iCloud.com, then sign back in. 
  4. Clear your browsing history. Choose History > Clear History.

Since the iCloud Birthdays calendar is updated daily, you may not see changes to birthdays in the Calendars app until the following day.

If you get a spam iCloud Calendar request

If you get a calendar request that you think may be spam or junk, let us know. Sign in to iCloud.com with your Apple ID and go to the Calendar app. Open the event that you want to mark as Junk, click Report Junk and then click OK. We'll automatically delete the event from your Calendar on all your devices that are signed in with the same Apple ID.

You can also go to the invitation from your iPhone, iPad, iPod touch or Mac and choose Report Junk > Delete and Report Junk.

Microsoft Windows

After each step, check your contacts, calendars or reminders.

Reminders are called Tasks in iCloud for Windows.

Refresh Outlook

Click Refresh Refresh icon in Outlook.

Turn off iCloud Contacts, Calendar and Tasks, and then turn it back on

  1. Open iCloud for Windows.
  2. Deselect Mail, Contacts, Calendars and Tasks, and then click Apply.
  3. Wait a few seconds, select Mail, Contacts, Calendars and Tasks, and then click Apply.
  4. Open Outlook.

Make sure the iCloud Outlook Add-in is active

In Outlook 2010 and later:

  1. Click the File menu.
  2. Click Options in the left-hand panel.
  3. Click Add-Ins in the left-hand panel of the Outlook Options window.
  4. Look at the list of add-ins in the Active Application Add-Ins section.
  5. Select the iCloud Outlook Add-in.

In Outlook 2007:

  1. From the Tools menu, select Trust Center.
  2. Select Add-ins from the left column.
  3. In the list of add-ins in the Active Application Add-Ins section, select the iCloud Outlook Add-in.

Learn how to manage Add-ins with Microsoft Outlook.

Check your default account in Outlook

  • In Outlook 2010 and later, select File > Info > Account Settings > Data Files. If iCloud is the default account in the Comments column, select a different account and click Set as Default.
  • In Outlook 2007, select File > Data File Management > Data Files. If iCloud is the default account in the Comments column, select a different account and click Set as Default.

Restart your computer

After you've restarted your computer, see if the issue has been fixed.

If you still need help

If you still need help, contact Apple Support. You can also use these steps to remove duplicate contacts or calendars.

 

Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. Contact the vendor for additional information.

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