BF3(You were disconnected from EA Online)

Hello

Try to reinstall plugin for battlelog and reboot your PC. Also, reboot your Internet (Modem or Router)

Thank you,but it didn't helped.

Still can't connect...

Try several options.

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1. Open your computer.
2. Open your local disk (C)
3. Open "Windows" folder
4. Open "System32" folder
5. Open "Drivers" folder
6. Open "etc" folder
7. Make a backup from the hosts file and call it hostsbackup for example
8. Open your original hosts file with notepad
9. Remove every sentence which starts with 127.0.0.1 
10. Don't forget to save the file and you are ready to game!

For those who keep having 'access denied'.
1. Copy the host file to your desktop.
2. delete the sentence "127.0.0.1"
3. Save it.
4. Copy the host file from your desktop to the original folder and overwrite it.

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Try to reinstall PunkBuster http://www.evenbalance.com/

-

Try to open ports.

Opening TCP or UDP Ports for connection issues

Online ports for Battlefield 3

Electronic Arts Port Forwarding Ports List

Cleaned Hosts.

Reinstalled PB.

Opened ports.

Still can't connect.

Okay.

 You can contact EA support Live Chat

Perhaps you have a problem with your Internet connection.  try to contact ISP.