Debugger doesn't support debugging x86 processes on x64 Windows

[cwistedt]

Environment data

dotnet --info output: .NET Command Line Tools (1.0.4)

Product Information: Version: 1.0.4 Commit SHA-1 hash: af1e6684fd Runtime Environment: OS Name: Windows OS Version: 6.1.7601 OS Platform: Windows RID: win7-x64 Base Path: C:\Program Files\dotnet\sdk\1.0.4

VS Code version: 1.15.0

C# Extension version: 1.12.1

Steps to reproduce

1. dotnet new mvc -o projname
2. cd projname
3. code . (start vscode)
4. change <TargetFramework>netcoreapp1.1</TargetFramework> to <TargetFramework>net452</TargetFramework> in projname.csproj
5. run: dotnet restore
6. ctrl+shft+d (opens debug)
7. Hit F5 (start debug) -> Choose .Net Core to create a launch.json
8. In launch.json change to net452 and .dll to projname.exe
9. Hit F5 again -> Click open Configure Task Runner -> Choose .Net Core
10. In tasks.json Change "command": "dotnet build", -> "command": ""dotnet build '${workspaceRoot}/projname.csproj'"",
11. Set a Breakpoint and Hit F5 again
12. Popup showing "Only 64-bit processes can be debugged."

Expected behavior

Should start debugging and hit breakpoints

Actual behavior

Only shows the error message and stops

If i change the <TargetFramework> to netcoreapp1.1 in projname.csproj and in launch.json change to netcoreapp1.1 and .dll to projname.dll the debbuging works and the breakpoints are hit. I checked the projname.dll that netcoreapp1.1 produced and the projname.exe that the net452 produced. And they are both in x86.

Am i doing something wrong, have something installed incorrectly or is this the expected behaviour?