How do I fix 404 error while updating package lists?
65
What can I do if a repository/PPA does not have a Release file?
30588
Unable to locate package
76905
Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application
1520
How to install software or upgrade from an old unsupported release?
150104
Unable to download software center from package manager: 404 Not Found
93942
How to fix "Failed to download repository information" error while updating?
148676
Where is the result of the "apt-get update" package list stored
113379
Updating the repository isn't working
134780
Is there a Yum Option that Creates an Error if a Package is Missing?
119943
Where can I find a repository for older unsupported releases?
96767
How to find the number of packages needing update from the command line?
4853
Trouble downloading packages list due to a "Hash sum mismatch" error
21184
Running "sudo apt-get update" returns connection errors
23096
How to remove obsolete packages after failed release upgrade via do-release-upgrade on Ubuntu?
66285
Package repository down, how to relocate?
91491
How can I get "delta" packages to optimize apt-get upgrade downloads?
94171
Why Does Software Updater Say No updates Available, but apt-get upgrade Shows updates available?