It means that the previously installed APP has not been deleted. The corresponding application can be found in Settings--Apps--All Applications, and the application will display "Not installed for this user." Click to enter the application information interface, and select "Uninstall for all users" from the menu bar in the upper right corner.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
It means that the previously installed APP has not been deleted. The corresponding application can be found in Settings--Apps--All Applications, and the application will display "Not installed for this user." Click to enter the application information interface, and select "Uninstall for all users" from the menu bar in the upper right corner.