Could not sign in to iMessage, Could not sign in. Please check your network connection and try again

HI,

We are seeing a lot of this and it may well be an issue to do with the servers being busy with the Mountain Lion release.

Did you have this working in Messages beta ?

If you have added the Apple ID you want to use to iOS devices first then remove it and try Messages "first" as it were.

Also try going to Activity Monitor and using the Quit button after highlight IMAgent.

Restart the computer after this despite the fact IMagent respawns

7:31 PM Friday; July 27, 2012

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Hi,

I do think that FishComputer has the idea right in the first place and that waiting maybe the only answer at present.

8:23 PM Friday; July 27, 2012

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Same problem here, I'm on the phone with AppleCare right now, mine keeps bringing up the password window like 3-6 times then fails saying "Could not sign in. Please check your network connection and try again." Port forwarded port 80, 443, and 5223 to the Mac... MacBook Pro 17"...

i also had been experiencing the same "Could not sign into iMessage. Please check network setting and try again." issue. i finally solved my problem after talking to the Apple Tech Support team.

1. Shut down laptop.

2. Switch on laptop again. immediately hold down the LEFT "SHIFT" key until u get into the log in screen. By doing this, ur laptop will be in "Safe Boot" mode.

3. Sign into iMessage using Apple ID. (i was able to sign into iMessage for the first time on my Mac since getting ML)

4. Shut down laptop again.

5. This time switch laptop on normally.

6. You should be able to use iMessage normally.

in addition, ensure date & time and timezone are 'ticked' to be set automatically.

Hope this helps. it did for me!

Cheers

FYI in my case, the default keychain got corrupted somehow. To fix this, open up the Keychain Access app in the /Applications/Utilities folder, click Keychain Access next to the apple (top left) Preferences, and click "Reset My Default Keychain". Worked like a charm, also fixed my problems accessing some Samba (windows) shares. Please note you will be asked for any saved passwords that you had in the keychain. Good luck!

HI

I see the later answer of starting in Safe Mode has solved it for you.

10:20 PM Sunday; July 29, 2012

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

Thanks, andzyao. It works!! ^_^

hi guys. New to Mountain Lion today. Have to say the above thread has helped me out and solved my problem with the above fix!

I take it this might be a bug with the software?

Hi,

It is not so much that it is a "Bug" in the full sense of the word, more that many people have set ups in Lion that Apple have been unable to predict or test for when Upgrading to Mountain Lion.

At present there does not appear to be a clear reason for this iMessage Registration issue.

Most common seems to be some issue with older Apple IDs ending in @mac.com

8:58 PM Wednesday; August 22, 2012

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

I see that all of your problem's got solved here, but mine still keeps giving me the same error: "Could not sign in. Please check your network connection and try again."

This is what I did so far:

1. I turned my laptop in safe mode, tried to log in message, still same error.

2. I went to keychain and reseted my keychain, it told me that it created a new keychain for me. still didnt work.

Hi,

Try using the "Contact Support" option on the iTunes page.

A jump in point is here https://expresslane.apple.com/Issues.action

Choose "Account Management"

In the right hand pane chose "Account has been Disabled of Security Reasons

Press the Continue button when it appears

This will take you to a page that has an email Link

Write to Support explaining your Apple ID logins in some places but cannot be "registered" for iMessages

7:15 PM Thursday; November 8, 2012

Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"

 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

ok ill do that, and i tried to log in imessage(macbook pro) with several apple id and its still the same issue. Even if i put in a random id or pass, it gives me the same error.

imesssage on my phone works fine.