When Cloud Connectors or Branch Connectors are deployed, the software is upgraded to the latest version. The upgrade patch can include OS upgrades and Zscaler software upgrades. OS upgrades do not happen in the same way other packages do. After the latest images are posted in the public cloud for Cloud Connector, you must create new deployments for the OS upgrade. The public cloud for Cloud Connector is hosted in the Zscaler Admin Portal for download for Branch Connector virtual machines (VMs). The devices are reprovisioned with the latest images.

Periodic Upgrades

Cloud Connectors and Branch Connectors check for new software versions every week, and if one is available, they upgrade automatically. By default, the upgrade window starts every Sunday at midnight (local time of deployed Cloud Connector or Branch Connector). All Cloud Connectors on the Cloud Connector Group page or Branch Connector groups on the Appliances page are updated within a two-hour window. Upgrades for connectors within the Cloud Connector group or Branch Connector group on these pages are staggered to prevent service impact. For information on updating the upgrade schedule, see Editing Cloud Connectors and Managing a Zero Trust SD-WAN Device.