iMessages not syncing on Mac: 8 quick fixes

December 26, 2025

Isha Kelly

iMessages not syncing on Mac: 8 quick fixes

iMessage is a popular way to send messages on Apple devices. But sometimes, iMessages not syncing on Mac can cause frustration. Your conversations may not update, and switching between iPhone and Mac becomes confusing. Let’s see how to fix it.

When your Mac messages are not syncing, it usually happens due to Apple Account issues, settings, or internet problems. This stops your messages from looking on all devices. Luckily, there are simple solutions you can try to get iMessage working again.

In this guide, we will cover messages on Mac not syncing step by step. From checking your account to enabling iCloud and sending messages from your Mac, these quick fixes will help restore syncing smoothly and reliably.

What is iMessage

iMessage is Apple’s messaging service that works on iPhone, Mac, iPad, and iPod touch. It lets you send messages over Wi-Fi or cellular data. Messages look with a blue background, and syncing ensures conversations stay updated across all your Apple devices.

Tip: 

How to Fix Lots of Problems on Your Mac

Sometimes, Mac messages not syncing is just one of many issues your Mac may face. Slow performance, app errors, or storage problems can happen. Using tools like CleanMyMac helps scan for junk, check for malware, and optimize your Mac quickly.

Also, iMessages not syncing on Mac can improve after a simple cleanup. By managing app permissions and keeping your system updated, you prevent glitches. Regular maintenance ensures your Mac stays secure, fast, and ready to sync all Apple device messages smoothly.

Why is iMessage not working on Mac

If iMessages are not syncing on Mac, it can happen due to Apple Account mismatches, misconfigured settings, poor internet, or external server issues. These problems stop your Mac messages from syncing across devices.

  • Apple Account Mismatch: If your Apple Account on Mac and iPhone does not match, iMessage on Mac not syncing can occur. Always ensure your email and phone number are identical across all devices to fix syncing issues.
  • Misconfigured Settings: When Messages in iCloud is disabled or iMessage is turned off, your Mac messages not syncing. Check settings on both Mac and iPhone to enable syncing properly.
  • Poor Internet Connection: A weak or unstable Wi-Fi or cellular connection prevents iMessages from syncing. Restart your router, move closer to Wi-Fi, or check with your provider to restore proper syncing.
  • External Server Issues: Sometimes iMessages not syncing on Mac happens because Apple’s servers are down. Check Apple’s system status page, and wait until services are restored to continue syncing messages.

How to fix iMessages on Mac not syncing

Now that you understand the reasons iMessage on Mac isn’t syncing, it’s time to move on and explore the solutions to get your messages updated properly again.

1. Check you are signed in

If iMessages are not syncing on Mac, the first step is to confirm you’re signed in with the same Apple Account on all devices. Mismatched accounts often block Mac messages from syncing.

On your Mac:

  1. Open the Messages app on your Mac.
  2. Click the Messages menu and select Settings.
  3. Go to the iMessage tab to see your account details.
  4. Ensure your Apple Account is signed in and the Sign Out button is visible.

On your iPhone:

  1. Open the Settings app on your iPhone.
  2. Tap your name at the top to view your Apple ID.
  3. Confirm the email and phone number match the account on your Mac.

You can also check it in a web browser:

  1. Open a browser and go to account.apple.com.
  2. Log in with your Apple Account credentials.
  3. Click Sign-in and Security in the left menu.
  4. Select Email & Phone Numbers and verify they match your Mac and iPhone.

Tip: Always use the same Apple Account across all devices to prevent iMessage on Mac not syncing issues.

2. Check that Messages in iCloud is enabled

If Mac messages are not syncing, it may be because Messages in iCloud is turned off. Allow it ensures all your iMessages stay updated across your Mac, iPhone, and other Apple devices.

On your Mac:

  1. Open the Messages app and go to Messages > Settings.
  2. Click the iMessage tab to access account options.
  3. Make sure Enable Messages in iCloud is checked to sync conversations.

On your iPhone:

  1. Open the Settings app and select Messages.
  2. Toggle iMessage on if it’s off.
  3. Tap Send & Receive and confirm the phone number and email match your Mac.
  4. Scroll down and enable Messages in iCloud to sync all conversations automatically.

3. Check Apple’s servers

Sometimes iMessages not syncing on Mac happens because of issues on Apple’s side. Checking the server status helps you know if the problem is acting or needs other fixes.

  1. Visit Apple’s System Status page in a browser to see current service conditions.
  2. Look for iMessage in the list; green means the service is working properly.
  3. If iMessage shows a problem, wait for Apple to fix it before trying other syncing solutions.

4. Check your internet connection

If iMessages are not syncing on Mac, a weak or unstable Wi-Fi or cellular connection can cause problems. Check your internet works properly helps your Mac messages sync smoothly across all Apple devices.

  • Turn Wi-Fi off and on again on your Mac to refresh the connection.
  • Move your Mac closer to the Wi-Fi router for a stronger signal.
  • Restart your router to fix temporary network issues that block iMessage syncing.
  • If problems persist, contact your internet provider to ensure stable connectivity for iCloud and Messages.

5. Disable iMessage

If iMessages are not syncing on Mac, turning iMessage off and on again can refresh settings and help your Mac messages sync properly.

  • On your Mac, deselect Enable Messages in iCloud, wait a few seconds, then re-enable it.
  • On your iPhone, toggle iMessage off in Settings, then turn it back on to restore syncing.

6. Use your Mac to send a message

If iMessages are not syncing on Mac, sending a message directly from your Mac can set off syncing. This often updates all conversations and ensures your Mac messages match your iPhone.

  1. Open the Messages app on your Mac.
  2. Select a contact who also uses Apple devices for iMessage.
  3. Type and send a message to start syncing all conversations in iCloud.

Sending a message from your Mac often forces syncing, which resolves most issues. This simple step can make all Mac messages not sync updates correctly across devices.

7. Update your devices

If iMessages are not syncing on Mac, outdated software can cause syncing problems. Keeping both your Mac and iPhone updated ensures Mac messages work smoothly and reduces questions with iMessage and iCloud.

On your Mac:

  1. Go to System Settings > General > Software Update.
  2. Click Update Now or Restart Now to install the latest macOS version.

On your iPhone:

  1. Open Settings > General > Software Update.
  2. Tap Update Now to install the newest iOS and enable automatic updates for future fixes.

Also, enable automatic updates on both devices. 

8. Sign out of Apple Account

If iMessages are not syncing on Mac after trying all fixes, signing out of your Apple Account and signing back in can force iCloud to resync and restore Mac messages properly.

  • On your Mac, go to System Settings > Apple Account and click Sign Out at the bottom.
  • On your iPhone, open Settings > Apple Account, scroll down, and tap Sign Out.

You might have to type your password on both devices. Make sure to log in again afterward to restore full syncing.

Signing out and signing back in often resolves persistent syncing issues. This action refreshes iCloud connections, ensuring all iMessages on Mac not syncing updates with your iPhone and other Apple devices.

Always remember to enter your password when signing out. Once back in, your Mac messages not syncing should start syncing automatically, restoring full iMessage functionality across all devices.

Conclusion

In summary, iMessages not syncing on Mac can happen for several reasons, including account mismatches, disabled Messages in iCloud, internet problems, or outdated software. Following these eight quick fixes from checking your Apple Account, enabling iCloud, and updating devices, to signing out and back in can restore proper syncing. 

Each step ensures your Mac messages do not sync smoothly across all Apple devices. Regular maintenance, strong internet, and correct settings prevent future issues. By applying these solutions, you can enjoy seamless conversations on your Mac, iPhone, and other Apple devices without missing any messages.

FAQs

What should I do if iMessages are not syncing on Mac?

Check your Apple Account, enable Messages in iCloud, verify internet connection, update devices, or sign out and back in to restore proper syncing.

Why are my Mac messages not syncing with my iPhone?

Mac messages not syncing often happens due to mismatched Apple IDs, disabled iCloud, poor internet, or outdated software. Correcting these settings fixes syncing issues.

How do I enable Messages in iCloud on Mac and iPhone?

Open Messages settings on Mac or iPhone, go to the iMessage tab, and toggle Enable Messages in iCloud to sync all conversations across devices.

Will sending a message from Mac fix syncing issues?

Yes. Sending a message from your Mac can trigger iCloud to sync, updating all iMessages on Mac not syncing across your Apple devices.

Do I need to sign out of my Apple Account to fix iMessage syncing?

If other fixes fail, signing out and back into your Apple Account on Mac and iPhone forces iCloud to resync messages correctly.

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