Scheduled Network Maintenance: Switch Firmware Update (Multiple Availability Zones)

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Updates from CoreWeave 1

1. resolvedOct 26, 2026, 4:51 PM UTC

   October 13, 2026 8:55PM UTC Scheduled - Details: CoreWeave will be performing network maintenance from Monday, October 19, 2026 at 12:00 UTC to Friday, October 23, 2026 at 00:00 UTC. Work runs during daytime hours each day in the window, 12:00 UTC to 00:00 UTC. We are applying a vendor-recommended firmware update to the boot drives of network switches in the following availability zones: US-CENTRAL-09A, US-CENTRAL-08A, US-EAST-04B, US-CENTRAL-10A, US-EAST-12A, US-CENTRAL-08B This update resolves a known issue that can cause a switch to become unresponsive, and it improves overall network reliability. Impact: No impact is expected. The update is applied live, without switch reboots or node drains, and running workloads can continue without interruption. In rare cases, a switch may need a brief restart after the update. Where this affects backend (GPU-to-GPU) network switches, a small number of nodes may temporarily lose part of their backend network bandwidth until the restart completes, which may affect multi-node jobs running on those nodes. Engineers and on-site technicians will be monitoring throughout the window, and affected customers will be contacted directly. No customer action is required. October 19, 2026 4:21AM UTC Active - Scheduled maintenance October 22, 2026 10:48PM UTC Active - This maintenance has been extended through Friday, October 23. October 26, 2026 4:51PM UTC Completed - Maintenance is done

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