In my Ubuntu VERSION 15.04 operating system whenever I fire the command "sudo apt-get update" I have the error below as:
"W: Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/vivid-backports/multiverse/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]"
Please help me i am not able to do solve this issue.