Vmware Converter: Failed to clone Volume C:

Recently I was trying to do P2V of a Windows 2003 STD Server to ESX platform. P2V was failed with error “Failed to clone Volume” and log files had the below message.┬áBlock level cloning of the disk was failing.

ERROR -- Convert: converter.fault.CloneFault
(converter.fault.CloneFault) {
   dynamicType = <unset>,
   faultCause = (vmodl.MethodFault) null,
   description = "BlockLevelVolumeCloneMgr::CloneVolume: Detected a write error during the cloning of volume \WindowsBitmapDriverVolumeId=[9F-14-A0-14-00-7E-00-00-00-00-00-00]. Error: 4641 (type: 1, code: 290)",
   msg = "",
}

Did some troubleshooting on the disk level, but didn’t help.

Finally got it solved by Changing(Hardcode) the NIC Speed to 100 MBpS from Auto on the Physical system.