Reverting to a previous version of ESXi

When you have updated your ESXi to newer version or patch it but you have some problems with new ESXi, you can revert to previous version easily:

Note: Back up your configuration data before making any changes.

1. In the console screen of the ESXi host, press Ctrl+Alt+F2 to see the Direct Console User Interface (DCUI) screen.
2. In the DCUI screen, press F12 to view the shutdown options for the ESXi host.
3. Press F11 to reboot.
4. When the Hypervisor progress bar starts loading, press Shift+R. You see a pop-up with a warning:Current hypervisor will permanently be replacedwith build: X.X.X-XXXXXX. Are you sure? [Y/n]
5. Press Shift+Y to roll back the build.
6. Press Enter to boot.

Further Reading

VMware Horizon View Connection (Session) Duration Report

vSphere 7 Upgrade Series – Part 2: Hardware Compatibility

vSphere 7 Upgrade Series – Part 1: Define Upgrade Path