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The same client browser session has made 6 requests in the last 2 seconds error message displays when accessing Microsoft Dynamics 365 over IFD

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This article provides a solution to an error that occurs when accessing Microsoft Dynamics 365 using Internet Facing Deployment (IFD).

Applies to:   Microsoft Dynamics 365
Original KB number:   4012055

Symptoms

After configuring Microsoft Dynamics 365 with claims authentication and Internet Facing Deployment (IFD), users aren't able to access Microsoft Dynamics 365 using IFD and the following error is displayed in the Event Viewer on the Active Directory Federation Server (ADFS)

Exception details: Microsoft.IdentityServer.Web.InvalidRequestException: MSIS7042: The same client browser session has made '6' requests in the last '2' seconds. Contact your administrator for details.
at Microsoft.IdentityServer.Web.Protocols.PassiveProtocolHandler.UpdateLoopDetectionCookie(WrappedHttpListenerContext context) at Microsoft.IdentityServer.Web.Protocols.PassiveProtocolHandler.ProcessCommonCookiesInLastAuthenticationStage(ProtocolContext context) at Microsoft.IdentityServer.Web.Protocols.WSFederation.WSFederationProtocolHandler.SendSignInResponse(WSFederationContext context, MSISSignInResponse response) at Microsoft.IdentityServer.Web.Protocols.WSFederation.WSFederationProtocolHandler.Process(ProtocolContext context) at Microsoft.IdentityServer.Web.PassiveProtocolListener.ProcessProtocolRequest(ProtocolContext protocolContext, PassiveProtocolHandler protocolHandler) at Microsoft.IdentityServer.Web.PassiveProtocolListener.OnGetContext(WrappedHttpListenerContext context)

Cause

One possible reason is that the external Host (A) DNS records that were created for IFD haven't been added to the Trusted Sites list in Internet Explorer settings.

Resolution

Add the IFD DNS records to Internet Explorer Trusted Sites. It should include the Dynamics 365 organization name record, the Dynamics 365 discovery web service record, the ADFS record along with the Dynamics 365 IFD federation endpoint record.
For Example:

CRM2016.Contoso.com- Dynamics 365 organization name record Dev.
Contoso.com - Dynamics 365 discovery web service record
ADFS.Contoso.com - ADFS record
Auth.Contoso.com - Dynamics 365 IFD federation endpoint record

  1. On the client computer, open the Control Panel and then select Internet Options.
  2. Select the Security tab.
  3. Select Trusted Sites, and then select the Sites button.
  4. For each of the above DNS Host (A) records, enter each one individually in the field Add this website to the zone:, and then select the Add button.

More information

For more information about Microsoft Dynamics 365 IFD configuration, see Configuring Claims-based Authentication for Microsoft Dynamics CRM Server.