Nokia Lumia 800 is not working properly for contacting marketplace

Hi Experts,
I am from New Zealand. My Nokia Lumia 800 is not working properly for contacting marketplace and browsing with Internet Explorer. It is showing several error codes like C00cee3b, C101a006 and so on.
A screenshot in this regard is attached herewith.
Please give me a solution to this issue.
Thanks in advance.

