apt update cannot connect to archive.ubuntu.com even after forcing IPv4, clearing DNS cache, changing mirror
2564
apt-get cannot connect to Ubuntu archives
11909
404 error with apt-get update, Don't have any PPA's
52190
How and when is old-releases.ubuntu.com updated?
87707
Can I easily make a host "mirror" that caches downloaded Debian packages?
18433
How do I fix DNS resolving which doesn't work after upgrading to Ubuntu 13.10 (Saucy)
42673
How would I connect to a proxy on Ubuntu Studio?
121392
"BAD ARCHIVE MIRROR" error while installing ubuntu server 12.04
339
How to resolve "Failed to download repository information"?
152158
failed to fetch security undermined error [IP: 91.189.91.38 80] in ubuntu 20.04
127895
403 Forbidden error in sudo apt-get upgrade ubuntu 17.4
90937
apt-get update errors
130650
E: The repository 'http//archive.canonical.com precise Release' is not signed
158674
How do I get `apt-get update` to work on a machine with no internet access and manually assigned IP address?
95593
sudo apt-get update returns an error
13399
Why can I no longer (un)install packages via apt-get after doing a partial dist-upgrade?
99687
update-alternatives --install says it needs link name path priority?
117112
Why isn't Ubuntu moving its repositories to old-releases anymore?