AVG Internet Security Suite 8 contains several components that allow you to protect the security of you Windows computer. By default, the AVG program will disable some applications and services on your computer for security reasons. One of these is the Universal Plug and Play, or UPnP, service. Although it is recommended to disable a service if you do not need it, the UPnP service is needed for users who share their files with other computers and devices on a local network. Fortunately, you can prevent AVG from disabling this service.
Right-click the AVG Anti-Spyware icon on your taskbar, and then click "Show main window."
Click the "Tools" icon at the top. This loads the configuration settings in the centre of the page.
Uncheck the check box next to "Show only recommended settings" at the bottom of the scroll window.
Scroll to and double-click "Services." This expands a list of configuration options for Windows services.
Uncheck the check box next to "Disable Universal Plug 'n' Play Service."
Click the "Apply Settings" button and restart your computer.