Missing .NET SDK 8.0 (or higher)

General
#1

When opening a default empty project in Flax 1.9, I get this error in the editor log

[ 00:00:02.999 ]: [Info] Missing .NET SDK
[ 00:00:03.501 ]: [Info] Exception: Missing .NET SDK 8.0 (or higher).
Stack trace:
[ 00:00:03.520 ]: [Info]    at nethost.Setup(BuildOptions options)
   at Flax.Build.Builder.CollectModules(BuildData buildData, Module module, Boolean withApi) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 227
   at Flax.Build.Builder.CollectModules(BuildData buildData, Module module, Boolean withApi) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 238
   at Flax.Build.Builder.CollectModules(BuildData buildData, Module module, Boolean withApi) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 257
   at Flax.Build.Builder.CollectModules(BuildData buildData, Module module, Boolean withApi) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 238
   at Flax.Build.Builder.CollectModules(BuildData buildData, Module module, Boolean withApi) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 238
   at Flax.Build.Builder.CollectModules(BuildData buildData, Module module, Boolean withApi) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 257
   at Flax.Build.Builder.BuildTargetNativeCpp(RulesAssembly rules, TaskGraph graph, Target target, Dictionary`2 buildContext, Toolchain toolchain, TargetConfiguration configuration, Boolean isBuildingReference, Boolean skipBuild) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 815
   at Flax.Build.Builder.BuildTargetReferenceNativeCpp(Dictionary`2 buildContext, BuildData buildData, Reference reference) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 640
   at Flax.Build.Builder.BuildTargetNativeCppBindingsOnly(RulesAssembly rules, TaskGraph graph, Target target, Dictionary`2 buildContext, Platform platform, TargetArchitecture architecture, TargetConfiguration configuration, Boolean skipBuild) in F:\FlaxEngine\Source\Tools\Flax.Build\Build\NativeCpp\Builder.NativeCpp.cs:line 1133
   at Flax.Build.Builder.BuildTargets() in F:\FlaxEngine\Source\Tools\Flax.Build\Build\Builder.cs:line 350
   at Flax.Build.Program.Main() in F:\FlaxEngine\Source\Tools\Flax.Build\Program.cs:line 152

However, I have verified the NET SDK is installed correctly:

C:\Users\Tony>dotnet --info
.NET SDK:
 Version:           8.0.404
 Commit:            7b190310f2
 Workload version:  8.0.400-manifests.996cfe54
 MSBuild version:   17.11.9+a69bbaaf5

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.27749
 OS Platform: Windows
 RID:         win-x64
 Base Path:   C:\Program Files\dotnet\x64\sdk\8.0.404\

.NET workloads installed:
Configured to use loose manifests when installing new manifests.
 [maui-windows]
   Installation Source: VS 17.12.35506.116
   Manifest Version:    8.0.3/8.0.100
   Manifest Path:       C:\Program Files\dotnet\x64\sdk-manifests\8.0.100\microsoft.net.sdk.maui\8.0.3\WorkloadManifest.json
   Install Type:        FileBased

 [maccatalyst]
   Installation Source: VS 17.12.35506.116
   Manifest Version:    17.0.8478/8.0.100
   Manifest Path:       C:\Program Files\dotnet\x64\sdk-manifests\8.0.100\microsoft.net.sdk.maccatalyst\17.0.8478\WorkloadManifest.json
   Install Type:        FileBased

 [ios]
   Installation Source: VS 17.12.35506.116
   Manifest Version:    17.0.8478/8.0.100
   Manifest Path:       C:\Program Files\dotnet\x64\sdk-manifests\8.0.100\microsoft.net.sdk.ios\17.0.8478\WorkloadManifest.json
   Install Type:        FileBased

 [android]
   Installation Source: VS 17.12.35506.116
   Manifest Version:    34.0.43/8.0.100
   Manifest Path:       C:\Program Files\dotnet\x64\sdk-manifests\8.0.100\microsoft.net.sdk.android\34.0.43\WorkloadManifest.json
   Install Type:        FileBased


Host:
  Version:      9.0.0
  Architecture: x64
  Commit:       9d5a6a9aa4

.NET SDKs installed:
  8.0.404 [C:\Program Files\dotnet\x64\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 8.0.11 [C:\Program Files\dotnet\x64\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 9.0.0 [C:\Program Files\dotnet\x64\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 8.0.11 [C:\Program Files\dotnet\x64\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 9.0.0 [C:\Program Files\dotnet\x64\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 8.0.11 [C:\Program Files\dotnet\x64\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 9.0.0 [C:\Program Files\dotnet\x64\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
  arm64 [C:\Program Files\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\arm64\InstallLocation]
  x86   [C:\Program Files (x86)\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
  DOTNET_ROOT       [C:\Program Files\dotnet\x64]

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

Outside Flax I can build and run net 8 apps without issues. I have set both the path environment variable correctly as well as the DOTNET_ROOT

I am on Windows.

#2

Your environment variable looks wrong.
Either REMOVE THAT or supply the full path.
Currently your runtime environment base path looks good except for the x64 bit in ‘Program Files’ path which the folder itself is dedicated to x64 components.

Edit: Sorry…The answer is wrong I see now trying to reproduce it.

#3

You mean this:

  DOTNET_ROOT       [C:\Program Files\dotnet\x64]

This is the correct path actually, where the dotnet.exe lives, this is also where the PATH variable is pointing to.

#4

Probably fixed in .NET9: Add support for .NET 9 SDK and runtime by GoaLitiuM · Pull Request #3058 · FlaxEngine/FlaxEngine · GitHub