CAEN Service Status

  • Below you will find a calendar of upcoming outages that affect CAEN services, including planned upgrades and maintenance.
  • A list of all past and present outage postings, including a description of the services affected, is also provided below.
  • Notifications of CAEN service down-times are regularly posted to our Twitter Feed UMcaenstatus Twitter feed.
  • Postings about current and upcoming U-M campus-wide service outages are available at the ITS Service Status page.


Gerstacker and ERB I & II Power Shutdown – Saturday, October 21

On Saturday, October 21 from 7:00 a.m. until 3:30 p.m., maintenance will be performed on the electric high voltage substation for the Gerstacker and ERB I & II buildings. The buildings should not be occupied during this time due to lighting, ventilation, networking, elevator, and life safety system service interruptions. Further information about this outage can be found on the ITS Service Status Page.

CLSE Server Maintenance – Thursday, November 16

On Thursday, November 16 between 5:00 and 8:30 a.m., maintenance has been scheduled for servers that support the CAEN Lab Software Environment (CLSE). This maintenance is intended to apply security patches, correcting recent operating system and software application vulnerabilities.

The following services may experience an outage during the above maintenance timeframe:

  • Linux Login Service (accessed as,, or, also known as the “VNC” servers.
  • Some applications on CLSE for Windows computers, including via the Windows Remote Desktop Service.

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