IIS Digest authentication needs to be installed and enabled on the server running Microsoft Exchange. To use Digest authentication on IIS 7 and later, you must install the service role and then for the EWS web site disable Anonymous authentication and enable Digest authentication. For full details of the installation process refer to http://www.iis.net/configreference/system.webserver/security/authentication/digestauthentication.
•Warning: Interaction with OCS
IP Office integration with Microsoft Exchange for Calendar mining cannot be configured and used if Microsoft Office Communication Server (OCS) and Office Communicator are already deployed. If this is the case, enabling digest authentication can stop the Microsoft OCS from working. There is a continual prompting for authentication in the Office Communicator and an error message is generated.
To install the Digest authentication role service:
1.On the taskbar, click Server Manager.
2.In Server Manager, click the Manage menu, and then click Add Roles and Features.
3.In the Add Roles and Features wizard, click Next. Select the installation type and click Next. Select the destination server and click Next.
4.On the Server Roles page, expand Web Server (IIS) | Web Server | Security and select Digest Authentication. Click Next.
5.On the Select features page, click Next.
6.On the Confirm installation selections page, click Install.
7.On the Results page, click Close.
8.You can now enable digest authentication, see below.
To enable Digest authentication:
1.Open Internet Information Services (IIS) Manager:
•Windows Server 2012 or Windows Server 2012 R2:
On the taskbar, click Server Manager. Click Tools and then click Internet Information Services (IIS) Manager.
2.In the Connections pane, expand the server name, expand Sites.
3.Click EWS.
4.Scroll to the Security section in the Home pane, and then double-click Authentication.
5.In the Authentication pane, select Anonymous Authentication and click Disable.
6.In the Authentication pane, select Digest Authentication, and click Enable.
7.Now proceed to creating the AvayaAdmin user account.
