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What is the use of security token services?
A security token provides identity information about users on a Web service consumer application that need to access resources on a Web service provider (SP) application. If the SP trusts the STS that issued the token, it allows or denies access to its resources on that basis.
What is the security token that the server provided?
Security tokens allow a client application to access protected resources on a resource server. Access token: An access token is a security token that’s issued by an authorization server as part of an OAuth 2.0 flow. It contains information about the user and the resource for which the token is intended.
How to install security token service in SharePoint?
In the Application Pools list, right-click SecurityTokenServiceApplicationPool, and then click Start. If the application pool is started already, click Stop and then, in the Action pane, click Start to restart it. Resolution: Install the missing assemblies into the global assembly cache (GAC) manually.
In SharePoint, the server-to-server security token service (STS) provides access tokens for server-to-server authentication. The server-to-server STS enables temporary access tokens to access other application services, such as Exchange Server 2013 and Microsoft Lync 2013, and apps for SharePoint.
Why is the security token service is not available?
Rule Name: The Security Token Service is not available. Summary: The Security Token Service is not issuing tokens. Cause: The service could be malfunctioning or in a bad state, or some assemblies are missing when you deploy the custom claims provider.
How to restart the security token service application pool?
Resolution: Restart the Security Token Service application pool. Verify that the user account that is performing this procedure is a member of the Farm Administrators group. Identify the server on which this event occurs.