★★★★ Maybe the office installed before was not cleaned. Clean up the original office with MicrosoftFixit, a special uninstall tool for office, or use Microsoft's own uninstall software Windows? Installation? Clean? Up forcibly uninstalled the originally installed office, deleted all folders and files with office on drive C, and then cleaned up the garbage and book list.

★★★★ Delete the backup files left by the update (you can also use security guards or optimization software to slim down and delete the system).

★★★★ If 360 and QQ Computer Manager are installed, please uninstall or shut it down first.

Office uninstall tool