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Question: Can't sign in to iMessage account and FaceTime on Mac

After update to High Sierra, I can't sign in to my iMessage account.

I already check and follow all solution here: If you can't sign in to your iMessage account or FaceTime on your Mac - Apple Support but did't get help.

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MacBook Air, macOS High Sierra (10.13.1)

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Nov 18, 2017 1:15 PM in response to thundersuo In response to thundersuo

Hi,


On the basis that Messages is not an iCloud app that will achieve little.


(neither is iTunes, The App Store , Games Center, iBooks or FaceTime)


Other Apple app may use the Apple ID that you use for iCloud.


Try this Users Tip

When the iMessages account will not Login



User uploaded file

9:15 pm Saturday; November 18, 2017


 iMac 2.5Ghz i5 2011 (Sierra)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 iPhone 6 iOS 11.x and an iPad (2)

Nov 18, 2017 1:15 PM

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Nov 19, 2017 11:28 AM in response to dicksonlim0226 In response to dicksonlim0226

Hi,


You have actually spoken to Apple and they have confirmed that the use of your Apple ID to the iMessages servers from your Mac is not the cause ?


To be clear the Serial Number (or rather lack of it) make the Login Device Specific.

As the iMessages are a standalone set (farm) then it means the use of the Apple ID for the iMessages account is also App Specific. This means the ID will work in other apps and services. It will also work on other devices.



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7:28 pm Sunday; November 19, 2017


 iMac 2.5Ghz i5 2011 (Sierra)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 iPhone 6 iOS 11.x and an iPad (2)

Nov 19, 2017 11:28 AM

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User profile for user: dicksonlim0226

Question: Can't sign in to iMessage account and FaceTime on Mac