Single Sign On (SSO) for Sharepoint Server 2013 with .Net Application

Sumi Elizabeth Joseph 1 Reputation point
2020-08-17T12:38:37.643+00:00

We have a SharePoint 2013 server for our internet users which is using Claims-based authentication.
Now business wants to create an SSO with the authentication provided by other .Net application.
The user logged in to .Net application should be able to access Sharepoint, without logging in again.

Would it be possible to have the existing authentication and also have SSO authentication for the same site?
Note - the requirement to support both the authentications is because not all Sharepoint users have access to the .Net application. But all .Net application users can have access to Sharepoint

Microsoft 365 and Office | SharePoint Server | For business
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  1. Emily Du-MSFT 51,861 Reputation points Microsoft External Staff
    2020-08-18T08:28:56.017+00:00

    With Claims-based Authentication and Active Directory Federation Services in SharePoint 2013, users are provided with an single sign on capability allowing them to use the data and applications they need.

    To configure single sign on for web application in SharePoint 2013, create the identity token issuer using the signing certificate, and upload the root certificate of the signing certificate used for the SharePoint server application, and configure Trusted Identity provider for your SharePoint server web application.

    References:

    Configure single sign-on (Office SharePoint Server)

    MOSS Single Sign On Set up Step By Step

    SharePoint 2013 Single Sign-On Authentication via SAML with OneLogin

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