Answers for "ubuntu 14 Some index files failed to download. They have been ignored, or old ones used instead."

ubuntu 14 Some index files failed to download. They have been ignored, or old ones used instead.

sudo su # login as root
cd /var/lib/apt/lists/
rm -fr *
cd /etc/apt/sources.list.d/
rm -fr *
cd /etc/apt
cp sources.list sources.list.old
cp sources.list sources.list.tmp
sed 's/ubuntuarchive.hnsdc.com/us.archive.ubuntu.com/' sources.list.tmp | tee sources.list
rm sources.list.tmp*
apt-get clean
apt update