User Services

The ALCF Help Desk assists users with support requests related to their ALCF projects. The help desk is open from 9 a.m. until 5 p.m. (Central time) Monday through Friday, exclusive of holidays.

Contact Us

866-508-9181 (US-Only Toll-Free Number)

Help Desk:
Building 240, 2-D-13 and 2129
Argonne National Laboratory
9700 South Cass Avenue
Argonne, IL 60439

Help Tickets

To submit a help ticket for a technical issue, please email and to submit a help ticket for an account related issue, please email

The ALCF Help Desk is located on the second floor of the Theory and Computer Sciences Building (TCS) building 240 at Argonne National Laboratory. Within TCS, our location code is 2-D-21. Please use the information kiosks at the entrance of the building to locate us, or call for assistance.