How to Open NCO Filesby Joshua Laud ; Updated September 28, 2017
The .nco file extension was created by Nero AG. It is a compressed file that can be opened with Nero software.
Download Nero Multimedia Pack if you have not already got it installed. (A trial download link can be found in the "Resources" section.)
Install Nero Multimedia Pack, following the onscreen instructions. Make sure, if prompted, to check the installation box for Nero BackItUp & Burn.
Restart your computer when prompted.
Right-click your .nco file in Windows, click "Open With," then choose "Nero BackItUp & Burn" from the list.
Choose to either expand the .nco contents, or burn to a disk, following on screen instructions where necessary.