KB11747 - When upgrading the EX switch from 9.0 to any later release (9.1 and above) you will see boot error messages if "virtual-chassis pre-provisioned" is configured.

⌂ KB11747 When upgrading the EX switch from 9.0 to any later release (9.1 and above) you will see boot error messages if "virtual-chassis pre-provisioned" is configured. Version 2026-06-19 (paste date) Latest Versions [juniper.net]