"could not sign in please check your network connection and try again"

I found the answer

It is in your "hosts" file

It should look some thing like this:

##

# Host Database

#

# localhost is used to configure the loopback interface

# when the system is booting. Do not change this entry.

##

127.0.0.1 localhost

255.255.255.255 broadcasthost

::1 localhost

fe80::1%lo0 localhost

If there are other thing you have not added then remove them

To get to the "hosts" file

1. Under go in the finder choose the go to folder

2. type /etc

3. Find the "hosts"

4. open it with text edit

5. remove what need to be removed

7. save a copy to your desktop

8. With out the .txt

9. Rename the org file "Old host"

10. Place the new one in that /etc folder

it will ask for passwords

I have the same problem and tried all suggested ideas, apple you really disappointed me!!!!

Worked for me! I used 8.8.8.8. Thanks! ➕

it works!! it solved my problem when trying to connect to the imessage on my ipod touch 4G iOS 5.0.1 thanks

I recommended this link to my friend and he followed and instant activation

http://code.google.com/speed/public-dns/docs/using.html

All solutions suggested didn't work for iMac .. T T .. Other suggestions should I try ? Please tell I'll appreciate.

Thanks a ton reganyelcich. Changing my DNS settings resolved the problem.

i have same problem. but i fixdd it.

i try 10~16 method for fix this facetime and message network connection error

and i finally fixed it.

i use mac book pro 2010 13". and 1years ago it have critical problem, then i changed LogicBoard.

nomarlly, if you chang LogicBoard, that your mac register serial number in your hardware.

you guys, go to apple mark -> about mac -> check serial number then you find "serial Number System Serial#"

and you will go apple service center -> and say!!!! register serial number plz!!! and you joy facetime, message.

if you guys fixed thid method, give me twitter mention @magnolia_choi !! good luck!!

big thanx!!! trick worked on my macbok pro!

Changing DNS settings also worked for me.

Changing DNS didn't work.

Resetting the keychain on the 5th time worked! Not sure why or how...

This work for me. Thanks! 😁

You should not use Textedit to edit the hosts file: the permissions are changed and the hosts file becomes more vulnerable, you have to use Textwrangler (Thomas Reed: thesafemac.com).

You can also use nano in Terminal.

For everyone that used Textedit:

Open DiskUtility and do "repair permissions".

Hello,
Also make sure that your logic board is the number of registered serie, click the apple in the upper left corner> about> Double-click version, if the serial number has not registered on the logic board does not connect, which was my case I changed my logic board and authorized apple forgot to register the serial number.