Converting VMWare to Hyper-V with Microsoft Converter, 503 Error

I've got 3 virtual machines on an ESXi 5.0 host that I'm trying to migrate to a Hyper-V host using Microsoft's Virtual Machine Converter.  I kick off the conversion and everything goes well for a few hours until the conversion fails with the error code found in the log file I'm including.  I've tried this same process with two different VMs running on this same host and get the same error.

I found a KB (below) that seeming describes my issue.  This KB says that the ESXi server has to be managed by a vCenter Server.  That confuses me because I successfully completed a ESXi to Hyper-V conversion using the same  conversion software, but for a different ESXi host (running 5.1) for the same client yesterday.  This ESXi host was not managed by a vCenter Server.  There is no vCenter Server in this environment.

The KB article is below and the log file is attached.  Any help would be much appreciated!  Thanks!

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Scott CSenior EngineerCommented:
Try upgrading your 5.0 host to 5.1 and see if that works.

That article is pretty clear that you need a vCenter server.  Why it worked on the other host, I'm not sure.

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SupermanTBAuthor Commented:
Unfortunately, that's not a realistic option.  At least not anytime soon.  I'm having to do this remotely
Ajay ChananaMCSE-2003/08|RHCSA| VCP5/6 |vExpert2018Commented:
There are two way to do conversion either remotely or installing converter inside the guest OS, did we tried both out here ?
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SupermanTBAuthor Commented:
I installed the converter on the Hyper-V OS.  I did not install Converter on the Guest OS itself.  It's possible to do that?
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I don't see a log file what is the error!
SupermanTBAuthor Commented:
see the log.txt file at the bottom of the post?
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I'll have to check from a Desktop no attachments shown from EE iOS App!
SupermanTBAuthor Commented:
10/30/2017 22:42:22 -04:00  [5]  Exception caught : Microsoft.Accelerators.Mvmc.Engine.ForVMware.Exceptions.VMwarePostReceiveException: Receiving response from VMware failed after multiple attempts. See inner exception. ---> System.InvalidOperationException: Unknown fault ---> System.Net.WebException: The remote server returned an error: (503) Server Unavailable.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
As it's been designed to work with vCenter Server I think you have your answer.
Vaseem MohammedCommented:
By any chance have you tired other application like 5Nine and Starwind
I am not sure about the limitation (if any) of 5nine FREE version
SupermanTBAuthor Commented:
Andrew:  I hear you, but it just seems odd that the migration went just fine on a 5.1 host with no vCenter in the environment.  Doesn't seem to add up

Vaseem:  I have not tried those.  Any experience with using those?  I've read about them, but never used them myself
Scott CSenior EngineerCommented:
@Andrew.....that's what I thought as well.  The migration needs to be done as designed.  If it worked without vSphere in one case I would be suspicious of the migration.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Luck of the IT Gods

Difficult to troubleshoot when being used out of design scope!
SupermanTBAuthor Commented:
I know I've used that Converter several times w/o a vCenter server involved, including the described 5.1 migration.  The KB I provided regarding vCenter also applies only to Microsoft Virtual Machine Converter 2.0.  The version I used is 3.1
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
The other issue is that ESXi 5.0 is no longer supported and a dead product.

Just out of curiosity are you using Microsoft Virtual Machine Converter 3.1 ?
SupermanTBAuthor Commented:
yes, using Microsoft Virtual Machine Converter 3.1
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Well if you are actually using 3.1, don't - it was withdrawn because it was buggy!

Retry with 3.0!
SupermanTBAuthor Commented:
Any idea where to get 3.0?  Even thought the website below says 3.0, when you actually download/install, it's 3.1
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
oh that's weird, maybe Microsoft re-issued it...

because the link states 3.0, because I wrote an Article on 3.1, and shortly after it was removed, and people have asked me where do they get 3.1, and I've had to tell them it was withdrawn!

and I checked my two downloads, and I have 2.1, 3.0 and 3.1!
SupermanTBAuthor Commented:
agreed....very weird
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Well I'm puzzled then....I can only assume, they must have re-issued and fixed it!
Scott CSenior EngineerCommented:
Reason not working....using application out of scope.
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