VMware Converter V2V conversion fails

keytechaus used Ask the Experts™
I'm trying to import a virtual machine to a new host however it fails with the error: FAILED: An error occurred during the conversion: 'The operation experienced a network error'

This is a Linux server.

Last few lines of the error log read:

2011-09-02T19:00:20.830+10:00 [05768 error 'Default'] Found dangling SSL error: [0] error:00000001:lib(0):func(0):reason(1)
2011-09-02T19:00:20.846+10:00 [03692 info 'vmomi.soapStub[0]'] Resetting stub adapter for server PIPE:\\.\pipe\vmware-converter-worker-soap : Closed
2011-09-02T19:00:21.049+10:00 [05768 info 'Default'] [taskSpec,467] [task-2] [TaskMap] task-2:task-1
2011-09-02T19:05:36.711+10:00 [05768 error 'Default'] [task,350] [LRO] Unexpected Exception: converter.fault.CloneFault
2011-09-02T19:05:36.863+10:00 [05768 info 'Default'] [task,379] [task-2] -- ERROR -- Convert: converter.fault.CloneFault
--> (converter.fault.CloneFault) {
-->    dynamicType = <unset>,
-->    faultCause = (vmodl.MethodFault) null,
-->    description = "The operation experienced a network error",
-->    msg = "",
--> }
2011-09-02T19:05:36.881+10:00 [05768 info 'Default'] [diagnosticManager,267] Retrieved taskInfo for "converter.task.Task:task-2" mapping it to "converter.task.Task:task-2".
2011-09-02T19:05:36.881+10:00 [05768 info 'Default'] [diagnosticManager,307] The task with id = "task-2" was found to be a "recent" task.
2011-09-02T19:05:36.881+10:00 [05768 info 'Default'] [diagnosticManager,321] No existing log bundle found for task with id = "task-2". The task is still "recent" so a log bundle will now be generated for it.
2011-09-02T19:05:36.896+10:00 [05768 info 'Default'] [diagnosticManager,790] Retrieving task related diagnostics for server task with id = "task-2".
2011-09-02T19:05:37.086+10:00 [03668 info 'Default'] Run 0 of job "job-2" finished with an error. -- struct Converter::Server::Job::JobExecutor::SchedulerUpdateSpec __thiscall Converter::Server::Conversion::ConversionJobExecutorImpl::UpdateJob(class Converter::Server::Job::InternalJob &,bool,const class Converter::Server::Scheduler::SchedulerItemStatistics &,const class Converter::Task::TaskInfo &) ("d:/build/ob/bora-470252/bora/sysimage/lib/converter/server/conversion/conversionJobExecutorImpl.cpp:405")
2011-09-02T19:05:37.476+10:00 [03668 info 'Default'] Suspended 1 scheduler items for job (job-2) -- void __thiscall Converter::Server::Job::JobProcessorImpl::SuspendJobAux(const class Converter::Server::Job::InternalJob &,class Converter::VdbConnection &) ("d:/build/ob/bora-470252/bora/sysimage/lib/converter/server/job/jobProcessorImpl.cpp:828")
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

When does this fail?

Are you using VMware Standlone Converter?


Yes, I am using the standalone converter (v5.0, have also tried with 4.3). Fails at 1% Error: Unable to clone disk C:\xxxx.vmdk on the virtual machine 'xxxx'

Status is: FAILED: An error occurred during the conversion:
'The operation experienced a network error'
Luciano PatrãoICT Senior Infraestructure  Engineer  


First is this two hosts in a different vCenter? Or working as a standalone hosts? Because if they are in the same vcenter you can migrate between them.

Second, are they using the same datastore? Or is different datastores?

Third, are this hosts on the same network? Or in different networks?

Also check the connections between the 2 hosts and also from/to the machine that you are using the vConverter.

Is there any spnashots on that VM?

Are you using the vConverter installed locally? If not, I recommended, or at least use a cold migration.

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Hi Jail,

1.  They are standalone hosts
2.  Different datastores
3.  They are on different networks

Process used:
Convert from source: VMware infrastructure virtual machine (Using 172.16.x.x)
Destination: VMware workstation or other VMware virtual machine (VMware workstation 7.0.x)
(Storing .vmdk locally on my laptop)

Process for import is the reverse however using 10.0.x.x

Could it be as simple as a networking issue? When logged in to vSphere client I do see the new virtual machine being created but then removed once the failure message appears in VMware Converter

Luciano PatrãoICT Senior Infraestructure  Engineer  


Disable the Firewall on your laptop.

Check ports here and see if you can connect to the ports using telnet.


What type of server are you trying to convert? Is this a live conversion, or is the VM power down?


are they on the same subnet ? and in the same domain ?


Have disabled the firewall on my laptop however it still fails with the same error :(
Can telnet OK to relevant ports.

Ian: they are on different subnets and different domains.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Domains will not be the issue, but different subnets could be, depending if you have any firewals in the way.

if your laptop cannot ping the esx server thats your problem and its a subnet issue
ICT Senior Infraestructure  Engineer  

Do not forget that you need to do this tests(ping, telnet and communication) this from the server/desktop that you have installed the vConverter and the host and the destination.

All must connect without any problem.

Are you using dns names, or IP? I recommend to use IPs addresses and not dns names.

Like I said before, are you trying to convert this online? Or with the VM power off? If is online, what type of server is this? Since this is a Linux server, and online conversion is not so state forward than a Windows Server.

Again since this is a Linus server, the best way is a cold migration(with the Boot vConverter ISO), or in the last case, install the vConverter in the server itself.

Check this issues examples:



How to cold migration Linux Servers




Because even you can convert the Linux server, after the conversion you can get lot of issues with the Linus Boot and LVM disks.

Hope this can help

I can ping the ESX server as my laptop (which holds the .vmdk) is on the same subnet. However the issue is a subnet issue...

Solution was to change the ESX host's IP address from 10.0.x.x to 172.16.x.x and now it appears to be converting OK


Changing IP addresses on the host fixed the issue

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