Check is enabled in the properties of the file attribute "read-only". If so, then this installation should be canceled, otherwise no changes to the file, including its removal, is impossible. If the file is not on the desktop, browse it with Windows Explorer - press the key combination Win + E and via the directory tree, navigate to the folder containing the desired file.
Click on the file with the right mouse button, this action brings up a context menu where you should choose the bottom row - Properties.
On the first tab of the opened window - "General" - contains a section with the desired settings: in the lower part look for the words "Attributes" and the checkbox "read Only" to the right. If this box is checked, uncheck it and click OK. Then delete the file and the procedure to be completed. If the reason is not in this attribute, then skip to the next step.
Maybe the file you want to remove blocked one of the applications that are running at the moment. If it is an application program to release the lock, simply close it. Try to do it - close all open applications, wait a minute and try to delete the file. If it fails, you'll have to shut down programs running in the background - antivirus, firewall etc. If this does not help, try another way.
Blocked is not applied, and the system app file you can try to remove by rebooting the computer in "safe mode". Then the OS will run in abbreviated form, many system services are disabled, and will increase the likelihood that problematic file, finally free from the program "exploiter". To use this method press the Win button, you trigger from the main menu, operation reboot, and when you start reloading, press F8. The screen will appear a menu where you have to choose one of the three safe mode options. After that, wait for system boot and delete the file.
Use programs that allow you to force unlock of any file, if the standard tools of the OS does not allow it. For example, it may be Unlocker is a small and free utility with the Russian interface, which can be downloaded from the website http://unlocker-ru.com.