AutoSync is disabled in Android ICS LG P920 3D. How turn it on? After upgrade Android from 2.3.x to 4.0.3 I can't turn on auto synchronization.
When Im trying I get msg:

AutoSync is disabled. Synchronization is enabled manually by server policy.


In Settings -> Accounts &amp; sync have a disabled switcher as on the screens below.

Do you know how can I turn on auto sync?

Device model: LG Optimus P920 3D.
Android version: 4.0.4
I'm abroad and using wifi and roaming GSM.

Screenshoots:
Thanks for advice, problem was with MS Exchange.

I had to delete MS Exchange account and recreate after this Exchange asked me about permission for account and everything works fine.