Microsoft .Net 4.5.2 is the prerequisite of Nero software. It is included in Windows 10 system. However, on Windows 7, 8 or 8.1 system, it is not included and needed to be installed.

During installing Nero, if there are error messages pops up when downloading or installing .Net Framework 4.5.2, you could firstly install it manually. Then install Nero.

1. Download .Net 4.5.2 from Microsoft's download page:

2. Install .Net 4.5.2. 

3. After .Net 4.5.2 is installed, please install Nero again.