update on ubuntu 14.04 "E: Some index files failed to download. They have been ignored, or old ones used instead."
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'Some index files failed to download' while updating
118978
Not all updates can be installed: partial upgrade
138125
dpkg: error: cannot scan updates directory `/var/lib/dpkg/updates/'
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How do I fix a "Problem with MergeList" or "status file could not be parsed" error when trying to do an update?
17208
What does this apt error message ("Download is performed unsandboxed as root...") mean?
51350
While updating the ubuntu 16.04 does not have a Release file Error
130118
Ubunutu 18.04 Updates 404 error
73173
How to Fix Broken Packages?
135575
How to fix a "Failed to fetch binary-armhf/Packages" error during apt-get update?
5877
"Failed to fetch" while updating
76248
"Failed to start session" after interrupted upgrade to 14.04
94171
Why Does Software Updater Say No updates Available, but apt-get upgrade Shows updates available?
1520
How to install software or upgrade from an old unsupported release?
2236
Why don't the Ubuntu repositories have the latest versions of software?
30226
How to resolve Google "Indexed, though blocked by robots.txt"
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A "failed to fetch" error occurs when apt-get update is run. How do I fix this?
85958
Automatic updates are not auto-downloading