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Sometimes you may encounter a problem where your iMessage conversations are not syncing between your iPhone and Mac. This can be particularly frustrating when you want to continue the chat on another device. Fortunately, some simple ways exist to fix this issue and get your iMessage back in sync.
This article will explore the most common reasons and solutions for iMessage not syncing on Mac.
Check iMessage settings on Mac and iPhone
The first step you should take is to check the iMessage settings on Mac and iPhone.
iPhone
To ensure that you can utilize all desired email addresses with iMessage, please follow these steps:

- On your iPhone or iPad, navigate to the Settings app.
- Tap on Messages.
- Select Send & Receive.
- Locate the section labeled YOU CAN BE REACHED BY IMESSAGE AT.
- Verify that the phone number or email address you wish to use is checked or enabled.
Mac
To ensure proper messaging settings on your Mac, please follow these steps:
Step 1: Open the Messages app on your Mac.

Step 2: In the top menu, click on Messages and then Settings.

Step 4: In the iMessage tab, verify the number in the You can be reached for messages at option.

Verify that both the phone number and Apple ID match the settings on your iPhone.
Also read: Does iMessage notify when you save a photo?
Turn off iMessage and turn it back on
Turn off iMessage on both your Mac and iPhone to synchronize messages from your Mac to your iPhone.

On your iPhone: Go to Settings > Messages > Toggle off iMessage. Wait a few seconds, and then turn it back on.

On your Mac: Open the Messages app, choose Accounts, and click Sign Out. Wait a few seconds, then sign back in.
After completing the above steps, enable iMessage again on your Mac and iPhone.
Following these instructions lets you check if the iMessages sync properly between your devices.
Sign in with the latest Apple ID

To sign in with the latest Apple ID, head to Settings > Messages > Send and Receive and then tap on your Apple ID to sign in.
Use the same ID to sign in on Mac too.
Also read: Why is iMessage turned off? Quick Fix
Update your iPhone
Updating your iPhone should be on your priority list of fixes if you haven’t done it in a while.

If you haven’t updated your iPhone in a while, go to Settings > General > Software Update to check for any available updates.
Update macOS
Ensure that you have the latest version of macOS installed on your Mac computer.
Follow the steps given below to update macOS:
Step 1: Head to System Settings.

Step 2: Navigate to General > Software Update.

Here, you will see the Update option if you have any software updates pending. If not, you will see the macOS version.

We hope that by following the above steps, you will easily fix the iMessage not syncing on Mac problem.
Also read: Fix: Your clock is ahead error on Mac