Follow the section Setting advanced configuration options using the vSphere Client for ESX/ESXi 3.0. 4.x, and 5.x in KB1038578 to disable
For step 6 look for VMkernel.Boot.impiEnabled and set value 0 or unchecked
Follow the section Setting advanced configuration options using the vSphere Client for ESX/ESXi 3.0. 4.x, and 5.x in KB1038578 to disable
For step 6 look for VMkernel.Boot.impiEnabled and set value 0 or unchecked