Invalid restore input. No target frameworks specified for first UWP project to start Rider app

Hello JetBrains,

I would like to try to develop UWP app. Then I downloaded :

• Rider
• .NET Framework
• MSBuild (JetBrains distrib)

I create new project UWP with Rider and I nothing editing into all files. But When I started Rider with this new project, throw error appear into NuGet tool windows that say :

C:\XXXXXX\RIDER\test-uwp\test-uwp\test-uwp.csproj: Invalid restore input. No target frameworks specified. Input files: C:\XXXX\RIDER\test-uwp\test-uwp\test-uwp.csproj.

[Notification][Restore] Restore failed

My test-uwp.sln file say that :

Microsoft Visual Studio Solution File, Format Version 12.00
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "test-uwp", "test-uwp\test-uwp.csproj", "{6895E3D7-98CF-45C2-BF82-F255917C177D}"
EndProject
Global
   GlobalSection(SolutionConfigurationPlatforms) = preSolution
      Debug|ARM = Debug|ARM
      Debug|x64 = Debug|x64
      Debug|x86 = Debug|x86
      Release|ARM = Release|ARM
      Release|x64 = Release|x64
      Release|x86 = Release|x86
   EndGlobalSection
   GlobalSection(ProjectConfigurationPlatforms) = postSolution
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|ARM.ActiveCfg = Debug|ARM
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|ARM.Build.0 = Debug|ARM
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|ARM.Deploy.0 = Debug|ARM
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|x64.ActiveCfg = Debug|x64
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|x64.Build.0 = Debug|x64
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|x64.Deploy.0 = Debug|x64
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|x86.ActiveCfg = Debug|x86
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|x86.Build.0 = Debug|x86
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Debug|x86.Deploy.0 = Debug|x86
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|ARM.ActiveCfg = Release|ARM
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|ARM.Build.0 = Release|ARM
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|ARM.Deploy.0 = Release|ARM
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|x64.ActiveCfg = Release|x64
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|x64.Build.0 = Release|x64
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|x64.Deploy.0 = Release|x64
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|x86.ActiveCfg = Release|x86
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|x86.Build.0 = Release|x86
      {6895E3D7-98CF-45C2-BF82-F255917C177D}.Release|x86.Deploy.0 = Release|x86
   EndGlobalSection
EndGlobal

My Project properties :

The Rider Settings preferences :

And all "using" statement Windows et System in code cannot be resolve :

What do you think about that ?

Sorry if issue is too easy to solve with experience on .NET development but It's my first microsoft app.

And I would like to know and start with clean project.

I know that it missing config or installed libraries but I don't know which....

Thank you for your support

Best Regards,