Ensure that all VMs are shut down (if they’re not - a green something shows up in their icon). If any are still running - shut them down.
Select “paulogrady” in the left hand column
Select the Updates category
Press “Refresh” in the top left corner, above the package list
You will be presented with a dialogue box saying “You do not have a valid subscription for this server”. Press “OK”.
It will now open a Task View and give you the console output of it updating the package repositories. It has finished when the last line reads “TASK OK”.
Press the X in the top right hand corner of that dialogue box.
Press the “Upgrade” button located next to the “Refresh” button. This will open an entirely new instance of the browser containing the console doing updates. Enter y when prompted.
Once completed, it will say “Your system is up to date” and drop you back to a shell.