10.04 upgrade (to 12...) never works
1520
How to install software or upgrade from an old unsupported release?
98511
16.04 Cannot install anything from Ubuntu Software center
48809
"The upgrade has aborted" error, how to proceed?
31506
How do I update Ubuntu manually?
65099
Unable to install any updates through update manager/apt-get upgrade
121201
Why can't I update applications without upgrading the whole OS?
140371
Update Ubuntu 10.04
404
Last upgrade crashes network manager (no internet connection, no applet)
118196
Kernel update (64) will not boot. How can I automatically boot with earlier version? U12.04LTS
12578
How do I upgrade to a newer version of Ubuntu?
2670
Why is "No new release found" when upgrading from a LTS to the next?
140850
Why does do-release-upgrade on Xubuntu running version 18.04 not offer to update to 20.04.1?
8526
Upgrading from Ubuntu 16.04 to 18.04 broke the system completely!
112955
How can I upgrade Ubuntu from 19.10 to 20.04 without losing packages?
67481
How to revert a do-release-upgrade?
19288
Update manager doesn't offer an upgrade to the new release
35512
Windows Update not working on Windows 2012 R2 Standard