Q: solution for this error 11556 while connecting itunes

Hi, chau.satish.  

Thank you for visiting Apple Support Communities.  

I understand that you are receiving error 11556 when attempting to connect to the iTunes Store.  Here are the steps for this specific error that I would suggest going through.  

"Error 11556"

 

This alert occurs when iTunes is trying to do something not allowed by the iTunes Store in that country.

The most common example of this is trying to sign in while limited to iTunes U by Parental Controls.

 

For more information, see the steps from iTunes 9: "One Moment Please" or "Error (-50)" message when accessing iTunes Store.

iTunes: Advanced iTunes Store troubleshooting

If the above steps do not resolve the issue, make sure that the iTunes Store is not disabled in Parental controls.  

Use Parental Controls in iTunes to set content restrictions

-Jason H.