Critical incident

Northwestern Information Technology: Quest Login Service Interruption

Affected: Quest Analytics Nodes, Quest High-Performance Computing Cluster (HPCC) (Server Management)

Current status of Northwestern Information Technology: Under maintenance — live Northwestern Information Technology status

Timeline

1. Jul 20, 2026, 21:26 UTC
   investigating
   Around 4:00 PM CDT Northwestern Information Technology is currently investigating an issue connecting to Quest via SSH and the Quest Analytics services. Users of these services are currently unable to make new connections to Quest. Batch jobs already running on Quest and sessions via Quest OnDemand should not be impacted. The next update will be posted by 5:30 PM CDT.
2. Jul 20, 2026, 21:34 UTC
   identified
   Northwestern Information Technology has identified an issue connecting to Quest via SSH and accessing the Quest Analytics Nodes via Jupyter, RStudio, and SAS Studio web applications. The next update will be posted by 5:30 CDT.
3. Jul 20, 2026, 23:12 UTC
   monitoring
   Quest services have been restored. Users can now connect to Quest login nodes and access Quest Analytics Nodes applications, including Jupyter, RStudio, and SAS Studio. Existing interactive sessions on the login nodes and Analytics Nodes, as well as batch jobs and Quest OnDemand sessions, were not impacted. Northwestern IT will continue to monitor network performance.
4. Jul 20, 2026, 23:42 UTC
   resolved
   Northwestern Information Technology confirms the incident is resolved for Quest High-Performance Computing Cluster.

Updates as published by Northwestern Information Technology (original).