Error: Some index files failed to download. They have been ignored, or old ones used instead [SOLVED]

cd /var/lib/apt/lists/

rm -fr *

cd /etc/apt/sources.list.d/

rm -fr *

cd /etc/apt

sudo cp sources.list sources.list.old

sudo cp sources.list sources.list.tmp

sed 's/ubuntuarchive.hnsdc.com/us.archive.ubuntu.com/' 
sources.list.tmp | sudo tee sources.list

sudo rm sources.list.tmp*

apt-get clean

apt-get update