22-Dec-2025

Network Disruptions: Tuesday, 23-Dec-2025 @ 10:00 AM

On Tuesday, 23-Dec-2025, from 10:00 AM to 12:00 noon, there will be brief 5-minute network interruptions on all CLASSE networks due to upgrades of CLASSE core networking equipment and firewalls. Connectivity to external sites will also be affected.

NoMachine Update: Tuesday, 23-Dec-2025

If you are a NoMachine user, at the end of Monday, 22-Dec-2025 (today), please save your work and log out of any NoMachine Virtual Desktops. On Tuesday, 23-Dec-2025, starting at 4:00 AM, all NoMachine servers will be updated to the latest release. When this update occurs, remote connections will be interrupted and all NoMachine Virtual Desktops will be deleted. Please submit a ServiceRequest with any questions or concerns.

Computer Care Over Winter Break: 25-Dec-2025 through 04-Jan-2026

Similar to recent years, please leave your computer powered on over the winter break (although you may turn off only your computer's display). Leaving your computer powered on allows software patches and security updates to be installed automatically. If you have any questions about these recommendations, please feel free to submit a ServiceRequest.

macOS Tahoe Release

Apple officially released the macOS Tahoe (macOS 26) operating system on 15-Sep-2025, and has recently updated it to v26.2. However, CLASSE services are being evaluated for compatibility with this new operating system, so we are postponing upgrading CLASSE-managed Macs to macOS 26.2 until early 2026. Furthermore, Apple is dropping official support for macOS Ventura (macOS 13), so we are upgrading CLASSE-managed Macs to newer operating systems as necessary for compliance with the Cornell University Policy on Information Security.

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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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