Your Elementary OS show a warning/alert like the following:
The update information is outdated. This may be caused by.......
Using one or more PPAs that don't work might cause this problem sometimes. Run
sudo apt-get update
to check which PPAs are causing the error and remove them if necessary.
In this case, the Google Chrome PPA don't work:
Solution:
Run the following three commands:
sudo sed -i -e 's/deb http/deb [arch=amd64] http/' "/etc/apt/sources.list.d/google-chrome.list"
sudo sed -i -e 's/deb http/deb [arch=amd64] http/' "/opt/google/chrome/cron/google-chrome"
sudo apt-get update
Problem fixed.
Reference:
http://www.omgubuntu.co.uk/2016/03/fix-failed-to-fetch-google-chrome-apt-error-ubuntu
