How old is your computer? What version of Windows are you running on it? I expect it's too old a computer that both Microsoft or Acer aren't supporting it any longer. Making this feature an unnecessary and broken burden on your system.
[Y]ou can uninstall Live Updater from your computer by using the Add/Remove Program feature in the Window's Control Panel.
1.On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
Windows Vista/7/8: Click Uninstall a Program.
Windows XP: Click Add or Remove Programs.
2.When you find the program Live Updater, click it, and then do one of the following:
Windows Vista/7/8: Click Uninstall.
Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
3.Follow the prompts. A progress bar shows you how long it will take to remove Live Updater.
All things being said, if your computer is much newer than what it might seem to be.... A newish Windows 10 computer, you probably shouldn't be negligent on keeping your OS uptodate (many OS updates include really important security fixes and such).