Thread: New software center issue after security update from Ubuntu

Thank you for your help with using Ubuntu downloads manager it currently works. But, after doing a download Ubuntu modernized my system with various essential updates for security. Now I get a message (waiting for further software managers to quit) when I try to download a fresh program from Ubuntu software centre. Please can you help me?

You have to close all software managers, if there are two managers active you find this error.

So close them all, as well as run sudo apt-get update, and sudo apt-get upgrade.