I need to install the "hide top bar" extension on a clean installation of Ubuntu 18.04. After I open the software center I get his error message on the top under the search bar:

Unable to download updates: you do not have permission to install software

When I try to search for "hide top bar" it does not find anything, even though it works on my other machines and virtual machines.

I have tried so far:

  • Rebooting
  • sudo apt update
  • sudo apt upgrade

Note: The user is set to auto login on startup

  • I use Ubuntu 18.04 Mate and I prefer Synaptic for software installation searches. If you don't have it already, you can install with sudo apt install synaptic. – AFH Feb 1 at 10:38

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