How to Create a Classic Mode Authentication via ‘Negotiate (Kerberos)’ in SharePoint 2013, Part 5: How to Authenticate the Provider

In this step, you will learn how to authenticate the provider.

1.       To configure SharePoint to use Kerberos, go to Central Administration, Application Management, and select Manage Web Applications.

2.       Select the Web Application that you want to configure (in this example, I selected port 80). Click on Authentication Providers in the Ribbon.

3.       In the Authentication Providers dialog, click the Default hyperlink.

4.       Go to Edit Authentication, Claims Authentication Type, select Enable Windows Authentication and select Negotiate (Kerberos) in Integrated Windows authentication drop-down. Click Save.

5.       To verify the IIS Web site authentication settings, go to Internet Information Services (IIS) Manager.

6.       Select the Web Application under Sites, then select Authentication.


7.       Go to the Actions pane, and click on Open Feature.

8.       In the Authentication dialog, select Windows Authentication.

9.       Click on Providers in the Actions pane. 

10. Make sure that Negotiate and NTLM are listed in Enable Providers list box. Negotiate must be listed first. Click Cancel.

11.   Click on Advanced Settings in the Actions pane.

12.   Make sure that Extended Protection is Off and the Enable Kernel-mode authentication is unchecked. Click Cancel.

Here, alerts will show two messages that you will disregard.

13.   Click Cancel in Advanced Settings; the alert remains.

14.   Right-click the Forms Authentication, then select Disable. The Alerts section will disappear.

This completes Part 5. If you want to continue reading How to Create a Classic Mode Authentication via 'Negotiate (Kerberos)' in SharePoint 2013, check out the rest of our series:

For further reading:    

All SharePoint Versions

The web parts are functional components that extend your SharePoint environment whether it’s hosted, on-premises, or part of Microsoft® Office 365.

SharePoint 2013, 2016, 2019, Online (Office 365)

On-Premises Only

These web parts extend SharePoint beyond its out-of-the-box capabilities by tailoring it to your requirements with Bamboo Solution’s growing portfolio of SharePoint Web Parts.

SharePoint 2013, 2016, 2019


Product Suites

Experience greater power and savings by bundling our SharePoint apps and web parts.

Essentials Suite

Essentials Plus Suite

Bamboo Premier Suite

Project Management Suite

Knowledge Management Suite

External User Manager


For more information on our product suites, contact us.

Featured Services

SharePoint Health Check

A SharePoint Health Check will identify the causes of issues and risks associated with your specific environment, and is custom tailored to provide you with the best recommendations to optimize your SharePoint environment.

SQL Health Check

Document recommendations relating to performance, stability, availability, or a specific focus you request of your SQL Server database instances.

My SharePointXperts

The truth is that each SharePoint skill may not be a full time job for many organizations, and it is nearly impossible for one person to do everything you need – so augment your team with SharePointXperts; providing the skill sets you need when you need them!