Disable authPersistNonNTLM in IIS 8.5

Procedure-related prerequisites

  • You need to be logged in as an administrator.
  • Configuration takes place in IIS web server.


  1. Go to: Administrative Tools >> Internet Information Services (IIS) Manager
  2. In the Connections span, expand the Sites node tree.
  3. In the Connections span, select the Default Web Site.
  4. The instructions describe the required steps for the Default Web Site.

  5. Double-click on the Configuration Editor feature.
  6. Select in the drop down menu Section system.webServer/security/authentication/windowsAuthentication
  7. Change authPersistNonNTLM to False.
  8. In the Action span, click on Apply