Visual Studio giving errors about incompatible packages that are not installed

Yossu 11

I have an ASP.NET Blazor server-side solution that I (and other team members) have been working on for months.

I just pulled the code from source control onto my lap top. However, VS gives errors like this...

Package Microsoft.Win32.Registry 5.0.0 is not compatible with net7.0 (.NETCoreApp,Version=v7.0). Package Microsoft.Win32.Registry 5.0.0 does not support any target frameworks.

I get these errors for every project in the solution, along with similar errors for System.Security.Principal.Windows and Humanizer.Core.

However, as far as I can see, none of these packages are referenced anywhere in the solution. I haven't referenced them, and looking through all the dependencies I have, I can't see any of these three as dependencies of referenced packages.

The only differences I can see between my dev machine and my lap top are that the dev machine is on Win7 with VS2022 17.4.0, whereas the lap top is Win11 with VS2022 17.4.1.

During one cycle of pulling a fresh copy of the code from DevOps, restarting both VS and the lap top etc, VS gave me a message when I loaded the solution, saying that in order to get the best experience (whatever that means), I needed to add some missing workflow types. VS Installer popped up and asked me to install the .NET Desktop workflow. No idea why, as this solution only has ASP.NET and MAUI projects, but given that the errors included Microsoft.Win32.Registry, I thought I'd give it a go. Sadly it didn't help.

I tried changing the TargetFramework to <TargetFramework>net7.0-windows</TargetFramework>, but it didn't make any difference.

In case it helps, here is the full .csproj file for one of the projects. I get all three errors in this project...

<Project Sdk="Microsoft.NET.Sdk">  
  
  <PropertyGroup>  
    <TargetFramework>net7.0</TargetFramework>  
    <ImplicitUsings>enable</ImplicitUsings>  
    <Nullable>enable</Nullable>  
  </PropertyGroup>  
  
  <ItemGroup>  
    <PackageReference Include="LanguageExt.Core" Version="4.2.9" />  
    <PackageReference Include="Microsoft.AspNetCore.Identity" Version="2.2.0" />  
    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="7.0.0" />  
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="7.0.0" />  
    <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="7.0.0" />  
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="7.0.0" />  
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="7.0.0">  
      <PrivateAssets>all</PrivateAssets>  
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>  
    </PackageReference>  
    <PackageReference Include="Pixata.Extensions" Version="1.23.0" />  
  </ItemGroup>  
  
  <ItemGroup>  
    <ProjectReference Include="..\MyProject.CommonHelpers\OneGiv.CommonHelpers.csproj" />  
  </ItemGroup>  
  
</Project>

Anyone any ideas?

Tianyu Sun-MSFT 30,811 Reputation points Microsoft Vendor

2022-11-21T09:20:19.613+00:00

Hello @Yossu ,

Welcome to Microsoft Q&A forum. Were these projects based on .NET 7.0 since the very beginning? The Microsoft.Win32.Registry 5.0.0 assembly should be included in old version of .NET/SDK or… I suspect there are some cache not cleaned or some framework/packages need to be updated. Have you tried to clean the cache like .vs, bin, obj… folders and nuget cache?
Yossu 11 Reputation points

2022-11-21T14:43:24.143+00:00

@Tianyu Sun-MSFT No, the whole solution was .NET6, but was upgraded to .NET7 when it came out. That was before I downloaded it on to my lap top. When I first downloaded, I got build errors, as I hadn't updated VS to the latest, so it didn't know about .NET7. I updated VS and tried again, but that's when I got all these errors.

I tried deleting all the .vs, bin and obj folders, and clearing the Nuget package, but it didn't make any difference.

As I mentioned above, I have tried downloading a fresh copy of the code from DevOps, so I wouldn't expect the .vs, bin and obj folders to be an issue, as none of those are in source control.

Thanks for the reply, any other suggestions?
Tianyu Sun-MSFT 30,811 Reputation points Microsoft Vendor

2022-11-28T12:11:31.423+00:00

Hi @Yossu ,

Can I understand as, before you downloaded it on to your laptop, this solution was upgraded to .NET7 and you can confirm that it built well without any errors after it was upgraded to .NET7? If so, may I ask if the same solution works well on other machines with the latest VS 2022 installed?
Yossu 11 Reputation points

2022-12-07T18:40:12.937+00:00

Hello Tianyu-Sun,

Chronologically...

*) The project was created in .NET6, and all worked fine

*) I got a new lap-top and installed VS

*) .NET7 was released and we upgraded the solution to use it. All compiled fine. So far this was all on my main PC, not the lap top.

*) I cloned the repository onto my lap top. This gave compilation errors, as VS on the lap top had not been upgraded to the latest version

*) I upgraded VS to include .NET7

*) Now when I tried to compile the solution on my lap top, I got the errors mentioned above

*) I deleted the files from my lap top and cloned again. Same issue

As you can see from the last step above, even if I clone the repository, so there aren't any files or folders left over form a previous attempt, I still get the issue.

Since I posted here, I tried two more things...

*) I copied the whole solution from my lap top onto a USB and tried opening it on my PC. I got the same errors

*) I copied the whole solution from my PC to the lap top, and it worked fine. I'm now using this for development.

I have other solutions cloned from various DevOps accounts (including the one this problematic solution came from), and not had any problems.

Does that clarify it? Thanks

Lord Asrothear 0

Got a similar error after Upgrading from Windows 10 to 11 on my Laptop
Package >Name< >Version< is not compatible with net7.0 (.NETCoreApp,Version=v7.0). Package >Name< >Version< does not support any target frameworks.
I tried repairing VS, using the preview, installed the newest net7 SDK, I even created a complete new project and got the exact error. It doesn't matter what NuGet I try, it won't work.
I switched from net 7 to 6 to 5, on ever version, same error. I downgraded the NuGet, wich works surprisingly, but could not compile the solution or update the NuGet back to its newest Version.
On my Win10 Machine, everything is working like a charm...
For refernece:
.net6 on new project

Restoring packages for D:\Cloud\GitHub\TEST\Test.csproj...
NU1202: Package Discord.Net.Core 3.9.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Discord.Net.Core 3.9.0 does not support any target frameworks.
NU1202: Package Discord.Net.Rest 3.9.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Discord.Net.Rest 3.9.0 does not support any target frameworks.
NU1202: Package Discord.Net.WebSocket 3.9.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Discord.Net.WebSocket 3.9.0 does not support any target frameworks.
NU1202: Package Discord.Net.Commands 3.9.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Discord.Net.Commands 3.9.0 does not support any target frameworks.
NU1202: Package Discord.Net.Webhook 3.9.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Discord.Net.Webhook 3.9.0 does not support any target frameworks.
NU1202: Package Discord.Net.Interactions 3.9.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Discord.Net.Interactions 3.9.0 does not support any target frameworks.
Package restore failed. Rolling back package changes for 'Test'.

Like I said, on Win10 no Problems at all...

Lord Asrothear 0 Reputation points

2023-02-02T22:42:47.2066667+00:00

@Yossu wich OS versions do you use?

Iván Rodríguez 0

I'm having the same issue, but just when we deploy our application to the server, when I debug locally and when I publish the project locally everything works fine.

I tried to see if I have to update any of those packages but for example WebApi is already updated to the last version.

I upgraded my solution to .NET7. I already install .NET 7 in my local machine and in the server.

NU1202: Package Microsoft.AspNet.WebApi.WebHost 5.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0). Package Microsoft.AspNet.WebApi.WebHost 5.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.AspNet.Razor 3.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0). Package Microsoft.AspNet.Razor 3.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.AspNet.Mvc 5.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0). Package Microsoft.AspNet.Mvc 5.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.AspNet.WebApi.Core 5.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0). Package Microsoft.AspNet.WebApi.Core 5.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.AspNet.WebPages 3.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0). Package Microsoft.AspNet.WebPages 3.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.Web.Infrastructure 1.0.0 is not compatible with net7.0 (.NETCoreApp,Version=v7.0). Package Microsoft.Web.Infrastructure 1.0.0 supports: net40 (.NETFramework,Version=v4.0)
    NU1202: Package Microsoft.AspNet.WebApi.WebHost 5.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0) / win7-x86. Package Microsoft.AspNet.WebApi.WebHost 5.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.AspNet.Mvc 5.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0) / win7-x86. Package Microsoft.AspNet.Mvc 5.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.AspNet.Razor 3.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0) / win7-x86. Package Microsoft.AspNet.Razor 3.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.AspNet.WebApi.Core 5.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0) / win7-x86. Package Microsoft.AspNet.WebApi.Core 5.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.AspNet.WebPages 3.2.9 is not compatible with net7.0 (.NETCoreApp,Version=v7.0) / win7-x86. Package Microsoft.AspNet.WebPages 3.2.9 supports: net45 (.NETFramework,Version=v4.5)
    NU1202: Package Microsoft.Web.Infrastructure 1.0.0 is not compatible with net7.0 (.NETCoreApp,Version=v7.0) / win7-x86. Package Microsoft.Web.Infrastructure 1.0.0 supports: net40 (.NETFramework,Version=v4.0)

1 answer

Furkan Cengiz 0 Reputation points

2023-02-28T10:14:59.8466667+00:00

I guess I have the similar issue. I've been using .net 7 since its release and the projects were working fine but even if I tried reinstalling sdks, runtime and visual studio, it still throws these errors. I downloaded the project to my laptop and it worked fine. I can't figure out what happened and what to do. Please help...
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Visual Studio giving errors about incompatible packages that are not installed

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