Azure Devops not finding restored nuget packages

Question

I created a build pipeline for a C# project.

I referenced different nuget packages like Entity Framework and some own packages that are located in a feed.

Local the whole solution is building and running without problems.

Also in the build pipeline the nuget restore is working. But the build is failing because it cant find the nuget packages.

This is happening with public packages like Entity Framework and also with the packages from my feet.

The nuget Version:

• Detected NuGet version 4.1.0.2450 / 4.1.0

I played around with build versions, build agents or created my own nuget.config file.

I also uninstalled nuget package, removed all references and reinstalled every package

For example:

##[error]paybla.Repository.EntityFramework\RepositoryBase.cs(3,19): Error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
RepositoryBase.cs(3,19): error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) [d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj]
##[error]paybla.Repository.EntityFramework\UnitOfWorkBase.cs(3,19): Error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
UnitOfWorkBase.cs(3,19): error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) [d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj]
##[error]paybla.Repository.EntityFramework\UnitOfWorkBase.cs(4,19): Error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
UnitOfWorkBase.cs(4,19): error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) [d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj]
##[error]paybla.Repository.EntityFramework\UnitOfWorkBase.cs(5,19): Error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
UnitOfWorkBase.cs(5,19): error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) [d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj]
##[error]paybla.Repository.EntityFramework\UnitOfWorkBase.cs(6,19): Error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?)
UnitOfWorkBase.cs(6,19): error CS0234: The type or namespace name 'Entity' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) [d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj]
##[error]paybla.Repository.EntityFramework\RepositoryBase.cs(11,26): Error CS0246: The type or namespace name 'DbContext' could not be found (are you missing a using directive or an assembly reference?)
RepositoryBase.cs(11,26): error CS0246: The type or namespace name 'DbContext' could not be found (are you missing a using directive or an assembly reference?) [d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj]
##[error]paybla.Repository.EntityFramework\UnitOfWorkBase.cs(15,26): Error CS0246: The type or namespace name 'DbContext' could not be found (are you missing a using directive or an assembly reference?)
UnitOfWorkBase.cs(15,26): error CS0246: The type or namespace name 'DbContext' could not be found (are you missing a using directive or an assembly reference?) [d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj]
##[error]paybla.Repository.EntityFramework\UnitOfWorkBase.cs(157,19): Error CS0246: The type or namespace name 'IDbSet<>' could not be found (are you missing a using directive or an assembly reference?)
UnitOfWorkBase.cs(157,19): error CS0246: The type or namespace name 'IDbSet<>' could not be found (are you missing a using directive or an assembly reference?) [d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj]
Done Building Project "d:\a\3\s\paybla.Repository.EntityFramework\paybla.Repository.EntityFramework.csproj" (default targets) -- FAILED.

Answer 1

请尝试检查您是否已将 \\packages 文件夹添加到源代码管理中，如果是，您可以从源代码管理中删除整个包文件夹，看看它是否可以解决问题。

Answer 2

Possibly unrelated to your case, but sometimes (in particular, when allowing R# to reference missing package) csproj file may contain reference to assembly on local drive - something like this

<ItemGroup>
  <Reference Include="name">
    <HintPath>../../your/local/path</HintPath>
  </Reference>
</ItemGroup>

Removing all such nodes and manually adding packages via nuget ui helped in my case