How to debug Unity projects with IL2CPP backends on the Hololens

Release Notes for Field Service Version 7, Update Release 10
November 8, 2018
Data Science with Python in Visual Studio Code
November 8, 2018

How to debug Unity projects with IL2CPP backends on the Hololens

Debugging Unity projects with a .NET backend is rather easy. Unfortunately, it’s deprecated at will go away and some point in the future.

Then there is IL2CPP. It’s considerably faster and even build times seems to be quicker to me. However, debugging was not possible or only for the player.

That is, until 2018.2.x.

But let’s start from scratch.

  1. Set up your Unity project build settings and enable Development Build, Script Debugging and Wait for managed debugger
  2. Build in Unity, open the solution in a VS.NET instance and deploy it to a remote device
  3. The build and deploy takes considerably longer and once deployed you’re asked to attach the debugger
  4. Open a new VS.NET instance from Unity and select Attach Unity Debugger from the drop down
  5. You should be prompted with a window that allows you to select the lens. (It should also work when the lens is attached via USB, but you might need to enable inbound UDP communication for devenv.exe)

Happy debugging!

News Reporter
News Reporter
Head of Operations (Banking), Director IT Governance, Teamlead Microsoft, Service Delivery Manager. Interested in Office 365, LAMP, IT Security and much more!