VMware Converter ‘A file I/O Error Occurred’

KB ID 0001688


It seems every time I use VMware Converter, there’s some new error that jumps up and makes me stumble!

Yesterday the problem was;

FAILED: A file I/O error occurred while accessing

VMWare Converter Error IO


Some searching told me this is actually a DNS problem, (where the converter could not resolve the DNS name of the machine being converted). BUT I had put the FQDN directly into this machines ‘hosts file’ so I doubt that was my problem. I suspect it was the fact that this machine was presenting a certificate that wasn’t trusted was actually the problem.

But either way the way to fix it is to re-queue the job again, but this time choose “Use proxy mode“.

Fix VMWare Converter IO Error

Then it worked fine.

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Author: PeteLong

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  1. Hi, I had this problem and it turned out to be the esxi firewall. The proxy node was in the allowed list for port 902 but the source server wasn’t. Once I added the source, it was fixed.

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  2. “Use Proxy Node” resolved the issue in my case. Thank you

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  3. The proxy mode seems to be very slow. Yesterday P2V 200GB took me 24 hours.

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  4. Thanks. Lots of posts all over about DNS, this, that, but NOTHING worked. Proxy setting worked fine!

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