Reinstall Message App On Mac

Apr 15, 2020  Now open the Mac App Store and select Updates from the sidebar. Download and install any available updates to your apps. For any apps you downloaded outside of the App Store, visit the developer’s website to download and install the latest updates. Check the box to automatically keep your Mac updated. Remove and reinstall problematic apps. Apr 15, 2020 It refuses to trust the software. Try removing your app entirely, then reinstalling it to see if that helps macOS mark it as verified. To remove and reinstall apps from your Mac: Open Launchpad then click and hold any app. Click the X button to uninstall apps you got from the Mac App Store. There are numerous stock Apple apps you can’t uninstall.

Messages on macOS lets you communicate with friends, family, and coworkers across a variety of different platforms, including Apple's own iMessage, along with SMS and services from Google, Yahoo, and AOL. But if you're new to the Mac or have just never set up Messages, you might be wondering how to get started with the app.

Follow these simple steps, and you'll be chatting with your friends in no time at all.

How to set up Messages on the Mac

  1. Launch Messages from your desktop, dock, or Applications folder.
  2. Enter your Apple ID email address and password. If you have two-step or two-factor authentication turned on for your Apple ID, enter your verification code.
  3. Click on Messages in the Menu bar

    Source: iMore

  4. Click Preferences.
  5. Click Accounts tab.

    Source: iMore

  6. Select the phone number and email addresses at which you would like to be reached.
  7. Choose which phone number or email address people will see when you start a new conversation.

    Source: iMore

How to set up Messages in iCloud in macOS

Messages in iCloud keeps both your iMessages and standard SMS in sync between your Mac and your iOS devices, and also lets you download your messages when you set up a brand new device.

  1. Open Messages from your Dock or Applications folder.
  2. Click Messages in the Menu bar.

    Source: iMore

  3. Click Preferences.

  4. Click the Accounts tab.

    Source: iMore

  5. Click on your iMessage account.

  6. Click the checkbox next to Enable Messages on iCloud.

    Source: iMore

  7. Click the Sync Now button to sync immediately.

    Source: iMore

And that's how you turn on iMessage sync.

How to set up Messages in iCloud in iOS

To fully take advantage of Messages in iCloud, you'll need to turn it on for any iOS or iPadOS devices you own.

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Update June 2020: Updated for the latest macOS.

macOS Catalina


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Reinstall from macOS Recovery

macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.

1. Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.

Command (⌘)-R

Reinstall the latest macOS that was installed on your Mac (recommended).

Reinstall Email On Iphone


Upgrade to the latest macOS that is compatible with your Mac.


Reinstall the macOS that came with your Mac, or the closest version still available.
Installing programs on mac.

You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.

When you see the utilities window, you have started up from macOS Recovery.

2. Decide whether to erase (format) your disk

You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.

3. Install macOS

When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.

  • If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
  • If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
  • If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
  • If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.

Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.

macOS Recovery exceptions

The version of macOS offered by macOS Recovery might vary in some cases:

  • If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
  • If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
  • If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
  • If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.

If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.

Other ways to install macOS

Reinstall Message App On Mac Computer

  • You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
  • Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.