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VMware: An error occurred while opening a virtual disk. Verify that the converter server and the running source machines have a network access to the source and destination ESX/ESXi hosts

Posted on 2014-02-19
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Last Modified: 2015-01-30
Hello,

I am having an issue when trying to configure a VM from VMware converter 5.5.  I start up the software, and select the option to "configure machine". Source type is VMware infrastructure virtual machine, then I put in my server info and admin credentials.  

I am now shown my inventory that I have in Vcenter, however.. when I select a powered off VM (doesn't matter which host the VM is on) and click next, I am presented with the error of:
 
An error occurred while opening a virtual disk. Verify that the converter server and the running source machines have a network access to the source and destination ESX/ESXi hosts

I am able to telnet to all my esxi hosts on port 902 and 443. I am also able to ping them by name from the converter server and from the vcenter server.  I am banging my head against a wall on this one..  Does anyone have any insight on this? Perhaps there is a file that needs to be configured within VMware converter to allow this to work?  There are no firewalls that should be getting in the way here.

Thanks for taking the time to assist.
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Question by:kjs00333
8 Comments
 
LVL 118
ID: 39870859
Can you upload the logs, and we will check and have a look at the logs for any errors.
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Author Comment

by:kjs00333
ID: 39871089
There are a bunch in that zip file that it creates.  Will these two help? They are the only ones which arent a .gz file.
vmware-converter-server-1.log
converter-gui-31.log
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LVL 118
ID: 39871195
Another test

1. Can you convert directly to vCenter?

2. Can you convert directly to ESXi host?

which versions of vCenter and ESXi are you using?
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Author Comment

by:kjs00333
ID: 39871214
No I cannot convert directly to vcenter or esxi. I am running vcenter 5.0 and Esxi 5.0.  
Someone else looked at the log file and said the following:

Ok, your problem is: when you add ESX to VC you don't accept its thumbprint.

Re-attach your ESX and accept its thumbprint, this will solve your problem.


I have no idea what he means by that as I don't remember ever being asked to accept a thumbprint when adding a new host to Vcenter. Do you have any insight?
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LVL 118
ID: 39871223
This seems like a reference to the SSL certificiate, SSL/SSH exchange, when adding a host.

Are you using DNS hostnames or IP Addresses ?
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Author Comment

by:kjs00333
ID: 39871235
Found it on the view window in Vcenter - view / administration / server settings / SSL
I selected the "verified" box at the top to apply to all the hosts and it now works.

I'll close the question, but thanks again Andrew for your time and assistance.
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LVL 19

Accepted Solution

by:
compdigit44 earned 500 total points
ID: 39878239
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Expert Comment

by:dbennett1900
ID: 40581055
I had the same problem...  cause was the physical server I was converting couldn't resolve the DNS name of the VM host in vCenter I was trying to write to as target. I simply edited the local host file on the source physical machine (running Converter) to add the specific host entry of the target, and problem was solved
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