The EntityFramework package is not installed on project

Question

I am having trouble getting the EF to install on my very simple project called 'Match' (just now learning MVC, better late than never). The general context here is that I created the Model class with only 2 fields and now I want to change the Model class to have a few more fields/properties. I have made the change in the Model class and am now trying to update the DB to match. I am trying to use Update-Database from EF to do that.

PM> install-package EntityFramework You are downloading EntityFramework from Microsoft, the license agreement to which is available at http://go.microsoft.com/fwlink/?LinkId=253898&clcid=0x409. Check the package for additional dependencies, which may come with their own license agreement(s). Your use of the package and dependencies constitutes your acceptance of their license agreements. If you do not accept the license agreement(s), then delete the relevant components from your device. Successfully installed 'EntityFramework 5.0.0'. Successfully added 'EntityFramework 5.0.0' to Match.

Type 'get-help EntityFramework' to see all available Entity Framework commands.

PM> Enable-Migrations Get-Package : A parameter cannot be found that matches parameter name 'ProjectName'. At C:\Users\Dave\Documents\Visual Studio 2010\Projects\Match\packages\EntityFramework.5.0.0\tools\EntityFramework.psm1:611 char:40 + $package = Get-Package -ProjectName <<<< $project.FullName | ?{ $_.Id -eq 'EntityFramework' } + CategoryInfo : InvalidArgument: (:) [Get-Package], ParameterBindingException + FullyQualifiedErrorId : NamedParameterNotFound,NuGet.PowerShell.Commands.GetPackageCommand

The EntityFramework package is not installed on project 'Match'.

Do you work model-first or code-first? What command do you use to update the database? — Gert Arnold, Aug 14 '12 at 15:18
Is this only related to this project? Can you add EF to other projects? — espenk, Aug 15 '12 at 13:55
Found a similar problem in this post: http://stackoverflow.com/a/7873572/461958. See if that helps. If so, this cab be marked as a duplicate post. — mateuscb, Aug 15 '12 at 16:59
I am using a code first model. For some reason, it started working when I removed the entity framework package i Installed using GUI version of the package manager (which installs version 5.0.0) and installed version 4.3.1 using the console instead — user1016313, Aug 16 '12 at 09:15
In my case, I have installed package that caused to issues in dependencies. When I remove that it works perfectly — Thilina Madushan, Mar 15 '21 at 16:48

score 237 · Answer 1 · answered Feb 05 '13 at 13:40

237

Hopefully no-one is as stupid as me, but for the benefit of searchers:

One possibility for this error - In the Package Manager Console, there is a dropdown for 'Default Project'. If this is set incorrectly, you will get The EntityFramework package is not installed on project 'x'. Change the dropdown to your EF project and all is good again.

answered Feb 05 '13 at 13:40

JsAndDotNet

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This was the problem for me, but the drop down was empty until I restarted VS. – Chad Hedgcock Feb 11 '14 at 16:13
Changing visual studio versions sets the default project to ' ' (nothing) it seems. This fixed it for me too. – Martin Dawson May 02 '16 at 20:03
I was exactly that stupid. Thanks for the tip! – FigletNewton Jan 12 '22 at 20:18
I know this is a little older, but you can also just add -ProjectName "EFProject" to the command in package manager – Christian O. Apr 29 '22 at 07:06

score 97 · Answer 2 · answered May 14 '16 at 16:24

97

In my case, restarting the Visual Studio helped.

answered May 14 '16 at 16:24

Margus

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This actually fixed it for me so I would disagree and say this is one of many potential answers to the question. – yellowbrickcode Oct 10 '16 at 09:44
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did not think that this helps, but I tried it and it has resolved the problem. – Andre Sep 16 '17 at 16:39
agh thought it was the .netcore upgrade the error message was `Update-Database : Parameter cannot be processed because the parameter name 'c' is ambiguous. Possible matches include: `... – ono2012 Oct 09 '17 at 18:09
I did not expect this but it did work. Nothing else worked and everything else was set properly and set the same after closing and reopening. – Michael Adamission Dec 15 '18 at 00:59
The "update-database" command had been working fine for a week or more, then today it stopped working with this error. Restarting VS worked for me, the only thing I'd done in between was to add an Azure publish profile and kick off a publish. – Detail Aug 18 '19 at 16:24
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This solves 99% of issues you face, you just need to remember that – Yahya Hussein Jan 01 '20 at 10:47

score 27 · Accepted Answer · answered Aug 24 '12 at 04:56

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Just update NuGet to 2.x. EF 5.0 requires it.

answered Aug 24 '12 at 04:56

SeriousMakc

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score 13 · Answer 4 · answered May 19 '19 at 16:09

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I have just restarted Visual Studio and it worked.

answered May 19 '19 at 16:09

steve

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score 9 · Answer 5 · answered Apr 08 '18 at 10:45

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In my case I install Microsoft.EntityFrameworkCore.Tools package in my project! problem fixed.

answered Apr 08 '18 at 10:45

Ali Yousefi

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score 8 · Answer 6 · answered Nov 21 '13 at 09:33

In my case I had a project that for some reason did not have a Packages.config file. The result was I got the error mesage "The EntityFramework package is not installed on project xxxx".

To solve this simply add a Packages.config file and "Install-Package EntityFramework" then works.

score 7 · Answer 7 · answered Aug 04 '15 at 00:22

7

In my projects I installed EntityFramework on them separately. Even though they all had the same version numbers on each project, it still didn't work. Resulting in the same error you get.

To fix this, I removed EntityFramework from all my projects and reinstalled it again.

Get-Project -all | Uninstall-Package EntityFramework

Next, you just reinstall it again.

Get-Project -all | Install-Package EntityFramework

answered Aug 04 '15 at 00:22

Jordec

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In my case I did the uninstall step and then reinstalled Entity only on the project I have the DbContext. – Feb 22 '16 at 12:08

score 4 · Answer 8 · edited Jan 19 '19 at 15:02

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I have the same problem. I have added EFCore to a project that has installed EF6. so add-migration xx command performed with EF6 instated of EFCore and I get this error. removing EF6 and restarting Visual Studio solved my problem.

edited Jan 19 '19 at 15:02

Suraj Rao

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answered Jan 19 '19 at 15:01

afshar

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score 3 · Answer 9 · answered Aug 31 '12 at 10:31

You will have to install the EF into your project. You can do that via Tools|Manage NuGet Packages, look under 'Installed' and click on 'Manage'. There you will see an option to install EF in your project. After that everything should work and modelchanges will be possible. It can take quite some time (in my case, it did!). Success! Peter

score 3 · Answer 10 · answered Mar 07 '15 at 06:28

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Open package manager console and select default project from dropdown in package manager console And Install entity framework using this command in command window.

install-Package Entityframework

answered Mar 07 '15 at 06:28

Musakkhir Sayyed

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score 3 · Answer 11 · answered May 05 '21 at 17:52

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In My Case reinstall Entity Package and restart Visual Studio.

answered May 05 '21 at 17:52

maryam ghoreishi

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saved my day Maryam – Reza Abolfathi Aug 17 '23 at 21:32

Hendi Dwi Purwanto · Answer 12 · 2021-11-08T00:27:54.587

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I have experienced with that issue I solved it by just install Microsoft.EntityFrameworkCore.Tools nuget package

that package will Enable these commonly used commands: Add-Migration Drop-Database Get-DbContext Get-Migration Remove-Migration Scaffold-DbContext Script-Migration Update-Database

edited Nov 08 '21 at 00:27

answered Nov 08 '21 at 00:17

Hendi Dwi Purwanto

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score 1 · Answer 13 · answered Aug 27 '16 at 06:46

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Try to update the Entity Framework Package, from the Nuget Package Manager of your project, that's solved my problem.

answered Aug 27 '16 at 06:46

pepitomb

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score 0 · Answer 14 · answered Jul 16 '14 at 18:08

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In my case the packages.config file was on disk but not in TFS.

answered Jul 16 '14 at 18:08

Max

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score 0 · Answer 15 · answered Jul 08 '16 at 17:06

This error can happen if the Entity Framework command's target project is unloaded in the Visual Studio solution (i.e. if you'd previously right-clicked the project in Solution Explorer and selected "Unload Project").

In this case, the solution is to load the project, then try running the Entity Framework command again.

score 0 · Answer 16 · answered Jan 05 '19 at 15:43

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should work if you are opening a project for the first time,

second click on the console project and "Set as stratup project"

answered Jan 05 '19 at 15:43

asli

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score 0 · Answer 17 · answered Jan 17 '19 at 14:19

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install EntityFrameworkCore install EntityFrameworkCore.SqlServer And Then Close Visual Studio And reopen Problem Fixed

answered Jan 17 '19 at 14:19

zolfaghari

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score 0 · Answer 18 · answered Jul 16 '19 at 21:19

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You can also clear cache NuGet in VS. resolved my problem

answered Jul 16 '19 at 21:19

Faziki

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Sonia · Answer 19 · 2019-07-28T21:26:06.953

In my case, I have a Xamarin.Forms solution with three projects - Backend (for Azure Database connection), one common library, an iOS project and an Android project. The error messages that I have received were "The EntityFramework package is not installed on project ..." and "No context type was found in the assembly ...". I have solved it by setting Backend as my StartUp project and then by entering the commands in the following format in the Package Manager Console:

Enable-Migrations -ProjectName Backend -Verbose

and after that

add-migration -ProjectName Backend Initial

I hope that this is of help for someone :)

score 0 · Answer 20 · answered Oct 01 '20 at 13:37

This problem can be related with conflict of two versions of EntityFramework and EntityFrameworkCore. For checking it, you can write: Get-Module in package manager console. If you see EntityFramework and EntityFrameworkCore together, you need to delete EntityFramework or dependecy that linked on EntityFramework. For searching dependency you can use search solution input in solution explorer. After deleting dependency or EntityFramework you need to restart project.

score 0 · Answer 21 · answered Jun 05 '22 at 01:20

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I will also add that closing and opening Visual Studio solves this problem for me. As of the time of writing this, this issue occurs on Visual Studio 2022.

answered Jun 05 '22 at 01:20

Ryan H

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The EntityFramework package is not installed on project

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