Ubuntu16.04 when installing the Deb file: This software is from a third party and may contain non-free components

How to resolve:

1, install Gdebi in Ubuntu Software Center.

2, after installation, select the right-click on the Deb file to install, open the way to select Gdebi, and then enter the administrator password to wait for installation, if it does not need to retry several times.

3, another method, directly on the terminal input: sudo apt install *.deb can also be resolved.

Reference:

http://blog.csdn.net/u013764485/article/details/54141993

Ubuntu16.04 when installing the Deb file: This software is from a third party and may contain non-free components