ubuntu not updating neither installing anything (Package system is broken)
120
How do I restore the default repositories?
126740
Software & Updates crashes and will not open
104506
How to repair corrupt package installation (mysql)
71368
Ubuntu 12.04 won't install
113379
Updating the repository isn't working
20398
dpkg broken after 15.04 upgrade fail
94171
Why Does Software Updater Say No updates Available, but apt-get upgrade Shows updates available?
8526
Upgrading from Ubuntu 16.04 to 18.04 broke the system completely!
30754
Cannot update: "No available releases found"
4305
How do I fix a "Problem with MergeList" or "status file could not be parsed" error when trying to do an update?
30645
How to install (old) packages for Ubuntu 9.04?
117852
"Package dependencies cannot be resolved" error when installing software
73068
cant install or remove anything on 18.04 cause of DPKG error
23273
How to delete broken packages in ubuntu
109677
How do I to resolve unmet dependencies to uninstall and reinstall package
108176
Ubuntu 16.04 broken kernel packages won't let me install or remove anything with apt-get
86777
Distribution upgrade problem "No new release found"