Got unknown iSCSI OpCode: 0x43 Cannot recover from unknown opcode while ERL=0, closing iSCSI connection

Solution Unverified - Updated -

Issue

  • The 0x43 error message is repeated indefinitely until the initiating server is powered off.
  • Every attempt to install Windows Server 2012 R2 to the iSCSI target.
  • Unable to install Windows 2012 R2 on server
  • When trying to boot an already installed Windows image

Environment

  • Red Hat Enterprise Linux 7
  • ProLiant BL460c Gen9
  • ROM: I36 09/12/2016
  • HP FlexFabric 10Gb 2-port 536FLB Adapter
  • Windows server 2012 R2

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