Conflicting VIBs error during ESXi upgrade using ISO image

You might have came across this error where, trying to upgrade the ESXi host using OEM provided Custom ESXi image or may be with VMware provided ESXi image and the upgrade got aborted with the CONFLICTING_VIBs ERROR.

In order to successfully complete the ESXi upgrade, one need to to do the following:

• Connect to host over ssh using putty and run the following command find the exact name of vib

       # esxcli software vib list | grep “displayed conflicting vib”

•  Once you identified the exact vib name, then just remove it by using following command

       #esxcli software vib remove -n “actual name of conflicting vib”

Note: Please do an impact analysis before you proceed with vib removal.

Now you boot up the host using ESXi ISO image and complete the upgrade (this time you shouldn’t see earlier previous conflicting vib error).

That's it... :)