W: Failed to fetch http://deb.debian.org/debian/dists/jessie-updates/main/binary-amd64/Packages 404 Not Found [IP: 151.101.140.204 80]
78428
Failed to fetch jessie backports repository
339
How to resolve "Failed to download repository information"?
147530
What is the version of my debian system?
11909
404 error with apt-get update, Don't have any PPA's
102747
Debian 9, APT, and "GPG error: ... InRelease: The following signatures were invalid:"
73032
Installing apt-get
140893
Error when using apt-get update
65019
apt looking for i386 files, even though architecture is amd64
150104
Unable to download software center from package manager: 404 Not Found
135575
How to fix a "Failed to fetch binary-armhf/Packages" error during apt-get update?
73083
failed to connect to http://changelogs.ubuntu.com/meta-release
155198
What is the difference between the "jessie" and "jessie-updates" distributions in /etc/apt/sources.list?
115722
Apt sources.list problem , packages not found?
60229
Failed to update Linux headers on debian stretch / Debian 9
157904
error 503: service unavailable when using apt-get update behind proxy
84988
apt-get build-dep is unable to find a source package
152027
how to install packages with apt-get on a system connected via proxy?