Update: CIS Maintenance Weekend this weekend.
Here’s the official list of affected services:
http://today.anl.gov/2016/01/it-maintenance-weekend-jan-15-17/
Note that Single Sign On (SSO) which allows external apps to authenticate against Argonne accounts (like Box, Workday, etc.) is being temporarily migrated offsite so that it will remain up during the network outage. And CIS is confident this outage won’t last more than 15 minutes.
Thanks!