Installing the Entity Framework in Visual Studio 2015

Question

I am reading / coding with Adam Freeman's Apress Pro ASP.NET MVC 5 book . In chapter 7 (p. 174), we must install the Entity Framework using the following commands:

Install-Package EntityFramework -projectname SportsStore.Domain
Install-Package EntityFramework -projectname SportsStore.WebUI

But it fails. Here is the result:

An attempt to collect dependency information for the package "EntityFramework.6.1.3" in relation to the project "SportsStore.Domain" focused on ".NETFramework, Version = v4.5.1"
An attempt to resolve dependencies for the package "EntityFramework.6.1.3" with DependencyBehavior "Most low "
Solution for installing the package" EntityFramework.6.1.3 "Solutions
for installing the package" EntityFramework.6.1.3 "
Adding the package 'EntityFramework.6.1.3' to the folder 'C: \ git \ SportsStore \ packages'
Added package' EntityFramework.6.1.3 'to the folder' C: \ git \ SportsStore \ packages '
Added the package' EntityFramework.6.1.3 'to' packages.config '
Executing the script file' C:\ git \ SportsStore \ packages \ EntityFramework.6.1.3 \ tools \ init.ps1 '
Executing the script file 'C: \ git \ SportsStore \ packages \ EntityFramework.6.1.3 \ tools \ install.ps1'

"get-help EntityFramework", Entity Framework.
​​ "EntityFramework 6.1.3" SportsStore.Domain
. ... 'EntityFramework 6.1.3' 'packages.config'
"EntityFramework 6.1.3" "C:\git\SportsStore\packages"
"C:\git\SportsStore\packages\EntityFramework.6.1.3\tools\EntityFramework.PowerShell.Utility.dll" .
"EntityFramework.PowerShell.Utility.dll" .
"EntityFramework 6.1.3" "C:\git\SportsStore\packages"
Install-Package: .
: 1 char: 1
+ Install-Package EntityFramework -projectname SportsStore.Domain
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~
+ CategoryInfo: NotSpecified: (:) [Install-Package],
+ FullyQualifiedErrorId: NuGetCmdletUnhandledException, NuGet.PackageManagement.PowerShellCmdlets.InstallPackageCommand

: 'C:\ git\SportsStore\packages\EntityFramework.6.1.3'. Visual Studio, .

(, Microsoft.Aspnet.Mvc 5.0.0), , EF , EF, . (Install failed. Rolling back...)

VS2015 .

Answer 1

, NuGet (, https://github.com/NuGet/Home/issues/1239, " " )

NuGet . ( 3.0.60624.657 3.1.60724.766)

Answer 2

:

SportsStore.WebUI -> SportsStore.Domain 
SportsStore.UnitTests -> SportsStore.Domain and SportsStore.WebUI

, install-package Entity Framework . .

.

Answer 3

Try to remove all EF nuget packages installed in your solution, and then reinstall only the one you need.

Answer 4

Try disabling links between projects and try installing EF. Hope this helps