I just installed Visual Studio 2017 and opened a solution I had been working in with Visual Studio 2015. It seems like everything works great except that the task runner explore
Task Runner Explorer is not shown in "View/Other Windows/Task Runner Explorer" menu if "Microsoft ASP.NET and Web Tools" extension is disabled. However if to enable it and to disable the "Microsoft Azure App Service Tools" extension then Task Runner Explorer will appear in the "View/Other Windows" menu but will not work.
So answer is following: both "Microsoft ASP.NET and Web Tools" and "Microsoft Azure App Service Tools" extensions should be enabled for Task Runner Explorer to work. Tested on Visual Studio Community 2017 Version 15.2 (26430.16)