Can't build for windows store, sdk error

I just made my first app, and I wanted to put it on the windows store but when I hit build and run I get this message "Exception: Failed to build Visual Studio project using arguments 'C:\Program Files (x86)\MSBuild\14.0\Bin\MSBuild.exe "C:\Users\mycomputer\Documents\Games\myapp\Build\My App App.sln" /nologo /maxcpucount /p:Configuration=Master /p:Platform=x86 /p:SolutionDir="C:\\Users\\mycomputer\\Documents\\Games\\myapp\\Build\\" /t:Build /clp:Verbosity=minimal'. Output:C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(2049,5): error MSB3774: Could not find SDK "Microsoft.VCLibs, Version=14.0". [C:\Users\mycomputer\Documents\Games\myapp\Build\My App\My App.csproj] C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets(2049,5): error MSB3774: Could not find SDK "WindowsMobile, Version=10.0.15063.0". [C:\Users\mycomputer\Documents\Games\myapp\Build\My App\My App.csproj]

ApplicationLauncherImpl.RunMSBuild (System.String args) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ApplicationLauncher.cs:383) ApplicationLauncherImpl.Build () (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ApplicationLauncher.cs:220) ApplicationLauncher.BuildAndRunOnSingle (BuildLaunchPlayerArgs args, WSASDK wsaSDK, WSABuildAndRunDeployTarget deployTarget) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ApplicationLauncher.cs:60) ApplicationLauncher.BuildAndRun (BuildLaunchPlayerArgs args) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ApplicationLauncher.cs:50) UnityEditor.WSA.BuildPostprocessor.LaunchPlayer (BuildLaunchPlayerArgs args) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ExtensionModule.cs:122) UnityEditor.PostprocessBuildPlayer.Launch (BuildTargetGroup targetGroup, BuildTarget target, System.String path, System.String productName, BuildOptions options) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:150) UnityEditor.HostView:OnGUI()"

I downloaded the window 10 sdk tools from here "https://developer.microsoft.com/en-US/windows/downloads/windows-10-sdk", but I can't figure out what is wrong. I'm using a PC if that helps or makes any difference.