21-Apr-2025

Network Maintenance: Tuesday, 22-Apr-2025 @ 10:00 AM

On Tuesday, 22-Apr-2025, between 10:00 AM and 11:00 AM, we will be performing network maintenance that might briefly interrupt connections into the CESR private and instrumentation networks (but without impacting CESR operations). If you have any questions or concerns, please submit a ServiceRequest.

Default Java Version Upgrade: Tuesday 22-Apr-2025 @ 10:00 AM

On Tuesday, 22-Apr-2025, the default version of Java on CLASSE AlmaLinux9 computers will change from version 11 to version 21. If you wish to override this system default version, you may issue one of the following commands to set the JAVA_HOME environment variable, which specifies the Java version for your login session:

• export JAVA_HOME=/usr/lib/jvm/java-1.8.0
• export JAVA_HOME=/usr/lib/jvm/java-11
• export JAVA_HOME=/usr/lib/jvm/java-17
• export JAVA_HOME=/usr/lib/jvm/java-21
• export JAVA_HOME=/usr/lib/jvm/java # use the system default

Microsoft Teams on CLASSE-Managed Windows Computers

Microsoft is currently in the process of retiring the Classic Teams app in favor of New Teams. Unfortunately, New Teams cannot be installed as a desktop client on CLASSE-managed Windows computers until we migrate our Windows systems to Windows 11 (or higher), which is anticipated for later this year — see here for more details. In the meantime, Windows users may follow these instructions to install New Teams as a Progressive Web App in their web browsers, which provides a similar experience to the desktop client.

Cornell ITSO 102 Cybersecurity Training

All faculty, staff, and other employees at the Ithaca-based campuses are required to complete the ITSO 102 annual cybersecurity training and attestation. Some questions in the training require clarification for the CLASSE computing environment, which we provide on this wiki page.

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General network and server maintenance will occur every Tuesday from 12:00 noon to 2:00 PM. The CLASSE-IT group will always announce any expected disruptions in our NewsLetter and via CLASSE-IT-NEWS-L, but with the size and complexity of our network there is always the potential for something to go wrong. We will do our best to contain all network maintenance and planned outages to Tuesdays from 12:00 noon to 2:00 PM.

Unless other arrangements have been made, CLASSE-managed Windows systems may be updated and rebooted on Tuesday morning at 2:00 AM, so please avoid critical or lengthy operations at that time. For more details, please see SystemExpectations.

The BeamPASS application receives bug fixes and new features on Tuesdays. When these updates are made, users will be logged out but should be able to login again within a few minutes. If you find BeamPASS is unavailable for longer than that, please submit a ServiceRequest.

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Questions or problems? Submit a service request (or email service-classe@cornell.edu).

Other resources:

• CLASSE-IT Home Page
• Previous newsletters

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