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Adding a storage LUN in ESX/ESXi fails with the error: Object reference not set to an instance of an object (2037650)


  • Cannot add a storage LUN in ESX/ESXi
  • Cannot create a VMFS volume in ESX/ESXi
  • Creating a VMFS volume fails
  • You see the error:

    An internal error occurred in the vSphere Client.
    Details: Object reference not set to an instance of an object
    Contact VMware support if necessary


This issue occurs if the size of the presented LUN is 2048 GB, whereas the maximum size supported in ESX/ESXi 4.x is 2048 GB - 512 bytes.


To resolve this issue, replace the presented LUN with another LUN with a maximum size of 2048 GB - 512 bytes.
It is recommended to use a LUN with a maximum size of 2047 GB.
For more information, consult your storage vendor.

Additional Information

For more information, see Configuration Maximums Guide.

Update History

<pre>10/23/2012 - Added LUN to title and symptoms </pre>

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