I had placed a NIC into SR-IOV mode and used the VF fine. After testing this, I wanted to go back to disable SR-IOV and go back to normal mode. But when I use "Configure SR-IOV" again in the hardware tab (ESXi 6.5 web) to set enable = no, I got the following message:
Failed to configure SR-IOV for device Intel(R) Ethernet Controller 10G X550T. Please see recent tasks for more details
Update PCI passthrough device configuration
Failed - An error occurred during host configuration.
Am I missing something? Any one know how to disable SR-IOV? I tried to modify my esx.conf but no luck.