Reading package list…error!

E:No packages encountered: header

E: MergeList /var/lib/ apt/lists/az.archive.ubuntu.com_ubuntu_dists_natty_main_i18n _transl- en

E: The package list or status file cannot be parsed or opened.

Solution:

Running these two commands should fix your problem

Code:

sudo rm /var/lib/apt/lists/* -vf

The first command will delete the corrupt list and when you run the second command, it will replace it with a new one

Code :

sudo apt-get update