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asp.net-corenugetidentityserver4blazor-webassemblyasp.net-core-scaffolding

.NET 6 preview 4: There was no runtime pack for Microsoft.AspNetCore.App available for the specified RuntimeIdentifier 'browser-wasm'

I am using .NET 6.0.100-preview.4.21255.9 , ASP.NET Core Blazor WebAssembly 6.0.100-preview.4.21255.9 . I try to override default Identity UI by this way: Add reference to NuGet package ]Microsoft.AspNetCore.Identity.UI](https://www.nuget.org/packages/Microsoft.AspNetCore.Identity.UI/6.0.0-preview.4.21253.5?_src=template) but error happen when add this NuGet package (another NuGet packages were ok)

Severity    Code    Description Project File    Line    Suppression State
Error   NETSDK1082  There was no runtime pack for Microsoft.AspNetCore.App available for the specified RuntimeIdentifier 'browser-wasm'.    acc.Client  C:\Program Files\dotnet\sdk\6.0.100-preview.4.21255.9\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.FrameworkReferenceResolution.targets 391 
Error   NETSDK1082  There was no runtime pack for Microsoft.AspNetCore.App available for the specified RuntimeIdentifier 'browser-wasm'.    acc.Client  C:\Program Files\dotnet\sdk\6.0.100-preview.4.21255.9\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.FrameworkReferenceResolution.targets 391

Main error information:

There was no runtime pack for Microsoft.AspNetCore.App available for the specified RuntimeIdentifier 'browser-wasm'

enter image description here

When I click to see detail error, it pointed to

<ResolveRuntimePackAssets FrameworkReferences="@(FrameworkReference)"
                          ResolvedRuntimePacks="@(ResolvedRuntimePack)"
                          UnavailableRuntimePacks="@(UnavailableRuntimePack)"
                          SatelliteResourceLanguages="$(SatelliteResourceLanguages)"
                          DesignTimeBuild="$(DesignTimeBuild)">
  <Output TaskParameter="RuntimePackAssets" ItemName="RuntimePackAsset" />
</ResolveRuntimePackAssets>

(File C:\Program Files\dotnet\sdk\6.0.100-preview.4.21255.9\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.DefaultItems.targets . Excerpt from https://gist.github.com/donhuvy/d98d59e8af9947e37e6d4fe85004e444#file-microsoft-net-sdk-frameworkreferenceresolution-targets-L391-L397 )

How to add NuGet package UI success?

Solution
    • Upgrade to new/latest versions of .NET
    • Clear cache in web browser
    • Delete old build fodlers (obj, bin), clean/Re-build Solution.