Where is the Microsoft.IdentityModel dll

Question

I have installed the Windows Identity Foundation but can't find the Microsoft.IdentityModel dll. According to the Azure Hands-on-Labs it should just be in Add Reference in VS2010. However it's not there.

I also looked in c:\Program Files(x86)\Windows Identity Foundation* and it's not in there (or the 64 bit program files folder).

Help!

I have fixed this by adding the following reference to the csproj file in notepad :( It works... — Moory, Jun 08 '10 at 22:19

Taras Alenin · Answer 1 · 2013-05-29T22:25:00.687

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How about a NuGet Windows Identity Foundation. Just add it you you project and away you go! Its one of the MS owned NuGets so should be maintained accordingly.

EDIT: In Windows 8 Windows Identity Foundation is installed (enabled) by turning a windows feature on in Control Panel > All Control Panel Items > Programs and Features > Turn Windows feature on or off the feature is Windows Identity Foundation 3.5. Installers linked in the answer above will not work on Windows 8

edited May 29 '13 at 22:25

answered Oct 08 '12 at 04:06

Taras Alenin

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The tooltip for this in Win8 Programs/Features says it's for WIF with .NET 3.5 or 4.0. WIF was integrated into .NET 4.5 so if you're developing in VS2012/.NET 4.5, just add references to System.IdentityModel/System.IdentityModel.Services. – pelazem Oct 07 '13 at 19:13
Including this NuGet package allowed me to deploy a website to Azure without the use of a VM and still have access to microsoft.identitymodel.dll - thanks! – Goose Nov 22 '13 at 17:31
when in doubt, Nuget! – jhilden Jul 09 '14 at 18:48
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In Windows 10, this is not a Windows Feature anymore. Using the NuGet package option works brilliantly on Windows 10. – Koen Zomers Dec 02 '14 at 09:00
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@KoenZomers, actually it *is* a Windows 10 feature. Right-click the taskbar Windows logo, select 'Programs and Features', click 'Turn Windows Features on or off', and in the dialog box that appears, check the box next to 'Windows Identity Foundation 3.5' – Monty Wild Nov 23 '15 at 23:06

score 52 · Accepted Answer · edited May 30 '12 at 17:23

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Have you installed Windows Identity Foundation and the companion WIF SDK?

edited May 30 '12 at 17:23

EBarr

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answered Jun 08 '10 at 22:30

Eugenio Pace

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First should be installed Windows Identity Foundation http://www.microsoft.com/downloads/en/details.aspx?FamilyID=eb9c345f-e830-40b8-a5fe-ae7a864c4d76&displaylang=en – angularrocks.com Jan 27 '11 at 11:15
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Could be added to your solution/project as a NuGet see my answer for a link. – Taras Alenin Oct 08 '12 at 04:08
Note that on Windows 10 you cannot install Windows Identity foundation anymore, this is now a Windows feature that needs to be enabled: https://dynamicsofdynamicscrm.com/2015/09/11/quick-tipenabling-windows-identity-foundation-on-windows-10-machines/ – Rémi Gaudin Jan 14 '19 at 12:04

score 41 · Answer 3 · edited Mar 13 '14 at 11:09

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If you've installed the WIF SDK, try :

C:\Program Files\Reference Assemblies\Microsoft\Windows Identity Foundation\v3.5\
   Microsoft.IdentityModel.dll

edited Mar 13 '14 at 11:09

SteveC

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answered Oct 21 '10 at 15:04

TJ Amas

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score 12 · Answer 4 · answered Nov 23 '15 at 23:11

For Windows 10:

Right-click the taskbar Windows logo, select 'Programs and Features'.

Click 'Turn Windows Features on or off'

In the dialog box that appears, scroll down or resize the window and check the box next to 'Windows Identity Foundation 3.5'

Click OK.

This activates the required DLLs. Apparently Windows 10 keeps all of those features in the windows installation so that it can activate and deactivate them on demand.

score 6 · Answer 5 · answered Nov 14 '11 at 16:05

I had this problem, but fixed it by referencing the DLL from "C:\Program Files\Reference Assemblies\Microsoft\Windows Identity Foundation\v3.5\Microsoft.IdentityModel.dll"

Go to reference properties and set Copy Local to True for the DLL. The DLL will now be included in the azure package.

score 2 · Answer 6 · answered Mar 22 '14 at 15:51

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In Windows 8.1 64bit, look under C:\Windows\ADFS

answered Mar 22 '14 at 15:51

CarlS

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@PlasmaPower You've got to admire the spirit. :) – Konrad Viltersten May 28 '14 at 16:27

score 2 · Answer 7 · answered Apr 15 '16 at 22:24

In Windows 8 and up there's a way to enable the feature from the command line without having to download/install anything explicitly by running the following:

dism /online /Enable-Feature:Windows-Identity-Foundation

And then find the file by running the following at the root of your Windows disk:

dir /s /b Microsoft.IdentityModel.dll

Edward Weinert · Answer 8 · 2012-08-01T21:21:14.270

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I had a similar problem. I got an exception "Type is not resolved for member 'Microsoft.IdentityModel.Claims.ClaimsPrincipal, Microsoft.IdentityModel, Version = 3.5.0.0, Culture = neutral, PublicKeyToken = 31bf3856ad364e35'.".

I tried to run the ASP.NET application from Visual Studio, which was a reference to a local copy of Microsoft.IdentityModel.dll.

I did not want to install the SDK and I had to copy the library to the directory "C: \ Program Files \ Common Files \ Microsoft Shared \ DevServer \ 10.0" and restart Visual Studio.

edited Aug 01 '12 at 21:21

answered Aug 01 '12 at 21:15

Edward Weinert

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Not that it matters much, but you only have to restart the ASP.NET Development Server, not all of Visual Studio. – sblom Nov 15 '12 at 17:53

score 1 · Answer 9 · answered Aug 08 '14 at 17:32

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Check namespace mapping changed after 3.5 see below URL for details. http://msdn.microsoft.com/en-us/library/jj157091.aspx

answered Aug 08 '14 at 17:32

Sandip

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This is just a link. Provide specific answer. – Shiplu Mokaddim Aug 08 '14 at 17:45
Please read ["How do I write a good answer?"](http://stackoverflow.com/help/how-to-answer) – Scott Solmer Aug 08 '14 at 18:01
I agree with providing an excerpt or summary relevant to the question. That said pointer to namespace mapping was exactly what I needed... so +1 :-). – Zephan Schroeder Feb 26 '19 at 22:28

score 0 · Answer 10 · answered Apr 09 '15 at 12:09

Install Both of the below links

Windows Identity Foundation

Note: (For Vista and Windows Server 2008 >>> Windows6.0 and For Windows 7 and Windows Server 2008 R2, >>> Windows6.1. )
Windows Identity Foundation SDK

Note: Download the 3.5 version for Visual Studio 2008 and .NET 3.5, the 4.0 version for Visual Studio 2010 and .NET 4.0.

Then Only, You will able to get the assembly called Microsoft.IdentityModel

Where is the Microsoft.IdentityModel dll

10 Answers10

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