This question already has an answer here:
I am new to Ubuntu.
I am getting an error whenever I try to run
sudo apt-get update
(407 Proxy authentication required)
Moreover, I am unable to install any software from Ubuntu software center not even using
sudo apt-get install. I have tried every answers mentioned in the related questions here but none of them worked for me.
When I try to play any audio file I am getting following error:
Required plugin could not be found Python (v2.7) required to install plugins to play media files of the following type: MPEG-1 Layer 3 (MP3) decoder
For this when I try to run following command, getting error:
sudo apt-get install ubuntu-restricted-extras Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package ubuntu-restricted-extras
I have been trying this since the last 2-3 days with no fruitful result.