Public bug reported: I tried many available solutions, but none of them worked.
ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: ubuntu-release-upgrader-core 1:0.220.8 ProcVersionSignature: Ubuntu 4.4.0-36.55~14.04.1-generic 4.4.16 Uname: Linux 4.4.0-36-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.21 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: Unity Date: Wed Sep 7 14:06:18 2016 InstallationDate: Installed on 2015-04-23 (502 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to trusty on 2016-09-07 (0 days ago) VarLogDistupgradeTermlog: ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade third-party-packages trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1621034 Title: I am not able to upgrade my Ubuntu from 14.04 to 16.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1621034/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs