message "Installing updates 1 from 1" does not vanish

[Hans John]

I have an Acer Notebook. I turned it on and the message "Installing updates 1 from 1, please do not switch out." is there for hours. In the meantime I switched it off and on but the message is still there... Any ideas?

 

[clutchc]

Can you boot to safe mode? If so, do that and shut down normally. See if that resets the update.