Open Internet Information Services (IIS) Manager: If you are using Windows Server 2012 or Windows Server 2012 R2: If you are using Windows 8 or Windows 8.1: If you are using Windows Server 2008 or Windows Server 2008 R2: If you are using Windows Vista or Windows 7: In the Connections pane, expand the server name, expand Sites, and then the site, application, or Web service for which you want to enable Windows authentication. Currently, when a client application authenticates itself to the server using Kerberos, Digest, or NTLM using HTTPS, a Transport Level Security (TLS) channel is first established and authentication takes place using this channel. There are three main reason why integrated windows authentication will fail. By default, Internet explorer will be have the following way: There are 2 main things that can prevent this from happeing. It may not be found or it may be assigned to another account other than the AD FS service account. After you upgrade Exchange Server 2013 to a newer build, the FBA page is displayed when a user accesses Outlook Web App or EAC.

An example of an how an SPN is used with AD FS is as follows: If the AD FS service account has a misconfigured or the wrong SPN then this can cause issues. If there is a "man-in-the-middle" attack occurring and they are de-crypting and re-encrypting the SSL traffic, then the key will not match. The element can also contain a useKernelMode attribute that configures whether to use the kernel mode authentication feature that is new to Windows Server 2008. When you install and enable Windows authentication on IIS 7, the default protocol is Kerberos. This commits the configuration settings to the appropriate location section in the ApplicationHost.config file. To work around this problem, reconfigure the desired authentication mechanism on the Outlook Web App or EAC virtual directories.
- Internet Explorer configuration. When the Advanced Settings dialog box appears, select one of the following options in the Extended Protection drop-down menu: Click OK to close the Advanced Settings dialog box. The following default element is configured at the root ApplicationHost.config file in IIS 7.0, and disables Windows authentication by default. The Channel Binding Token is a property of the TLS-secured outer channel, and is used to bind the outer channel to a conversation over the client-authenticated inner channel. View or Configure Outlook Web App Virtual Directories. Enable Integrated Windows Authentication is not checked in the properties of IE. Hold down the Ctrl key, right-click the Outlook icon in the notification area, and then click Test E-mail AutoConfiguration. For more information on this see Best Practices for Secure Planning and Deployment of AD FS. Reason integrated windows authentication fails. - Channel Binding Token Additionally, you have either Windows Integrated or Basic Authentication enabled.

This problem occurs because the upgrade process copies the default Web.config file over the existing, customized Web.config file.

d. In the Test E-mail AutoConfiguration window, untick the Use Guessmart check box and the Secure Guessmart Authentication check box. Security zones are not configured properly, Best Practices for Secure Planning and Deployment of AD FS, A web browser queries Active Directory to determine which service account is running sts.contoso.com. Windows authentication supports two authentication protocols, Kerberos and NTLM, which are defined in the element. You can change this setting using the PowerShell cmdlt Set-ADFSProperties -ExtendProtectionTokenCheck. c. Verify that the correct email address is in the E-mail Address box. Additionally, the FBA page continues to appear even after the user provides valid credentials. Active Directory tells the browser that it's the AD FS service account. Internet explorer will receive a 401 response from AD FS with the word NEGOTIATE in the header.

You can use Windows authentication when your IIS 7 server runs on a corporate network that is using Microsoft Active Directory service domain identities or other Windows accounts to identify users.

There are three main reason why integrated windows authentication will fail. Additionally, you have either Windows Integrated or Basic Authentication enabled. This includes the HTTP module settings.

As the Integrated Windows Authentication feature uses Windows to obtain user verification challenge response tokens, the machine where the Mimecast for Outlook application is installed must be an Active Directory domain member, and the logged in user must be a domain user and the same user as the Microsoft Outlook profile being used.