MonoDevelop is not being installed

Questions & Answers
1

I am having a very strange issue in that the built-in MonoDevelop script editor is not installed. There is not MonoDevelop folder in the Unity directory, but in the preferences it shows that it should be using MonoDevelop (built-in) as the external script editor.

I have downloaded versions 4.5.5 and 4.5.1, and I still get this issue. I am using Windows 7, which I have downloaded Unity for before without an issue.

I have read in other topics similar to this one that downloading MonoDevelop by itself really does not help.

3

It happens if .NET is not installed on your system and you run Unity installer without administrative privilege. To fix this issue, simply:

Right click on Unity Installer > Run as administrator (Even if you have installed Unity)

Now during the installation, Windows should give an option to download .NET . After that everything must work find.

2

The issue was being caused by another application at run time. The application was not allowing the Unity installer to run the MonoDevelop and .NET installers.