Please know that Windows "Add/Remove Programs" and its build-in uninstaller can remove only the main executable program files, but not all program files and components.
Most computer programs are installed with its build-in uninstaller that can also help uninstall the program. Manually Uninstall AVG File Server Edition 2013.P.3462 with Build-in Uninstaller.
sys or other files shared with other software are deleted