During the management plane upgrade, avoid any configuration changes from any of the Global Managers.
- In a web browser, log in to Global Manager for the domain at https://nsxt_gm_vip_fqdn/).
- Select System > Upgrade from the navigation panel.
- Click Start to upgrade the anagement plane and then click Accept.
- On the Select Upgrade Plan page, select Plan Your Upgrade and click Next.
The NSX Manager UI, API, and CLI are not accessible until the upgrade finishes and the management plane is restarted.