The HDF Group offers several levels of Support Services, including Self-Service support (documentation and the HDF-Forum), the HDF Helpdesk's Service Desk and free email support, and Priority Support.
For technical questions (such as issues with the software, web pages, or documentation) please contact the HDF Help Desk using either the Service Desk or email:
Helpdesk Email Address:
For questions regarding contracts or other non-technical issues, please contact:
Business Office Email Address:
Telephone: (217) 531-6100