Security Updates - The package system is broken
118661
How to solve apt "package cannot be configured because package is in a different version" errors?
58573
Broken package after update: linux-headers, error: BrokenCount >0
35931
Apt update error - "An error occurred during the signature verification" (Chrome)
24957
Node Package Manager got corrupted in some way, now it cannot be installed
64509
Can't update from official repositories [Error 409]
12773
The requested package is unknown
113145
What does 'apt-get install update' do?
1771
How to get rid of 'security updates available' warnings?
31793
The following packages have unmet dependencies!
36938
How to remove an uninstalled package's dependencies?
43579
I cannot install new packages: "Could not get lock /var/lib/dpkg/lock"
134563
How do I remove a broken software source?
33220
What is a security update?
135452
How do you see what packages are available for update
97771
"The package lists or status file could not be parsed or opened"
66915
How to request a package upgrade in the next Ubuntu release
34069
Why am I getting authentication errors for packages from an Ubuntu repository?