Looking at the NuGet package manager will only show you the packages for a given project, not for the entire solution.
You can look in the /packages folder at the solution root folder to see all the packages that are loaded. You may have duplicate and old versions in there though, so you might want to just clear out the folder (a good idea anyway!) then run package restore to see what gets pulled back in. Those will be all the packages loaded in the entire solution.
+++ Rick ---
>Hi everybody,
>
>I have a complex solution consisting of many projects. Is there a way in the VS 2015 Package Manager Console to get a list of all installed packages?
>
>I found this link
https://docs.nuget.org/consume/package-manager-console but it doesn't show me how to get list of installed packages.
>
>Thanks in advance.