Customer Support

Customer Support

For assistance with technical issues please contact the Client Technology Services support team:

  • E-mail:
  • Help Desk: 1-800-969-9646. (International callers: +415-277-8280)
  • Support is available from Sunday at 5 P.M. to Friday at 8 P.M. US Eastern Time.

System Maintenance Announcement:

Please be advised that the following Korn Ferry Product and Support sites: (,https://assessment.ninthhouse.nethttps://services.personneldecisions.comhttps://survey.pdi-corp.comhttps://client.pdi-corp.comhttps://www.instantadvice.net, and will be unavailable during the following maintenance window:

4 pm US CST ( 22:00 GMT)  Friday, January 30th, 2015 through 4 pm US CST ( 22:00 GMT)  Sunday February 1st, 2015. 

During this time, the Surveys, Online Assessments, Interactive Tools, Leader as Coach, Courses, Simulations and Instant Advice products hosted on these sites will not be available for access.  Once the maintenance is completed access to the sites will be restored.  During this maintenance window, we will be relocating our current hosting facility to facilitate the consolidation of diverse Korn Ferry processing centers into a highly secure and controlled tier 3 processing facility.  Please contact Client Technology Services support ( should you have any questions.