I've experienced same problem. I assume problem is with some PPA applications running in python.
I tried @Lubos solution, but result was still same. I've noticed that after init 2 there was still running some proceses of my-weather-indicator. (PPA https://launchpad.net/my-weather-indicator ). After I kill them I was able to finally run upgrade without errors. sudo do-realease-upgrade Unfortunatly upgrade stoped at installing python3-minimal package. After restart I was able to finish upgrade by sudo apt-get install -f #to finish python3-minimal sudo apt-get dist-upgrade #continue upgrade Now it seems 16.10 upgrade is complete. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1633545 Title: PermissionError on upgrading from 16.04 to 16.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1633545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
