CODEWITHSUNDEEP
asp.netasp.net-core
Ramy Ayman
Ramy Ayman

Reputation: 61

There was an error running the selected code generator: 'Package restore failed'.Rolling back package changes for 'BankAccount'

I have created new ASP .Net Core app named 'BankAccount' and when i used to create controller of type 'API controller with actions , using Entity Framework', it gives me the following error => There was an error running the selected code generator: 'Package restore failed'.Rolling back package changes for 'BankAccount'

Here is the version of all my dependencies 

 <Project Sdk="Microsoft.NET.Sdk.Web">

 <PropertyGroup>
   <TargetFramework>netcoreapp2.1</TargetFramework>
 </PropertyGroup>

 <ItemGroup>
   <Folder Include="wwwroot\" />
 </ItemGroup>

   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.App" />
     <PackageReference Include="Microsoft.AspNetCore.Razor.Language" Version="2.1.0" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.1.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.1.0" />
     <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration" Version="2.1.0" />
     <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.1.0" />
  </ItemGroup>

 </Project>

This is Visual Studio 2019 Preview Version and here is screenshot of the error:

enter image description here

Upvotes: 3

Views: 8687

Answers (8)

Kiril
Kiril

Reputation: 1

I had a similar error but with View. Only one thing helped me: I deleted all packages that were in Package Source Mapping. (Tools->NuGet Package Manager->Package Manager Setting->Package Source Mapping->Remove All).

Upvotes: 0

Sofia Doumani
Sofia Doumani

Reputation: 1

I had the same issue with .Net 7.0 and I was installing the NuGet packages in the 7.0.0 version. I just updated all of them and became 7.0.4 and 7.0.5. After that, I was able to Scaffold.

Upvotes: 0

krickX
krickX

Reputation: 31

In my case, I've installed CodeGeneration, CodeGeneration.Design nuget package and I've upgraded.net version to maximum version and upgraded all my packages to max. This happens when scaffloding tryies to install the maximum version of package which is ahead of your project .net version.

Upvotes: 1

user19644698
user19644698

Reputation: 1

Yes , the same issue for me worked after Updating all the NuGet packages from (v6.0.6---->v6.0.7)

Solution : Update NuGet package

Upvotes: 0

Aleksandar
Aleksandar

Reputation: 1

I am using VS2022 and .NET CORE 6. I faced with the same issues and solved it buy updating all installed nuget packages.

Upvotes: 0

Septyan Dony
Septyan Dony

Reputation: 11

I'm using .net core 5 and had the same issue. To fix this, i try to downgrade both Microsoft.EntityFrameworkCore.Tools and Microsoft.EntityFrameworkCore.SqlServer from 5.0.15 to 5.0.12

after downgrading, i add this "Microsoft.VisualStudio.Web.CodeGeneration.Design" then try to readd new scaffold item and it works on me

Upvotes: 1

Grimwolf89
Grimwolf89

Reputation: 21

I had the same issue. The problem was the versions of various NuGet packages (see screenshot). My problem was with an existing project, so I created a new project and did the scaffolding successfully. After that, I used the same package versions for my existing project.

I updated the following packages in the screenshot to the same version and everything worked.

Upvotes: 2

Badiparmagi
Badiparmagi

Reputation: 1285

I had the same issue. I downgranded the Microsoft.EntityFrameworkCore.Tools and Microsoft.EntityFrameworkCore.SqlServer to 5.0.4 and problem solved.

Upvotes: 4

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