To enable UPnP on your AT&T U-verse router, read the quick, simple how to turn on upnp on Att uverse router steps given below and proceed with the same.
Get an Ethernet cable and connect your AT&T router and the computer using it.
Now, open the default web browser on your system.
Navigate to the gateway user interface section.
Locate and click the Home Network option.
Now, a list of devices available on your network will be displayed on the screen.
Click the Access Shared Files option followed by Enable.
Now by competing how to turn on upnp on Att uverse router guide, the UPnP option is enabled successfully.