Software Center on Ubuntu 16.04 is Constantly Loading - Unable to Use
Software Center, now just called "Software", is constantly loading and not displaying any updates or searched packages. The apt-get command is working just fine, but it seems to be stuck. Perhaps a recent update requires a reboot?
On Ubuntu 20.04, I killed the snap-store process (pkill snap-store - thanks Luckylooke), and everything started working. No need for a re-start.
This worked for me:
sudo apt purge gnome-software ubuntu-software
sudo apt autoremove
sudo apt install gnome-software ubuntu-software
sudo reboot