Using Windows 2012 NFS with VMware ESX

So I used Windows 2008R2 with UNIX services to provide my ISO share to my testlab ESXi server. I upgraded to Windows 2012 doing an in-place upgrade. This broke the configuration and I have been spinning in a circle with no luck, have read blogs, tech articles, and today I finally fixed it. It is good to make a little accomplishment once in a while.

On the command line I was getting the following error on the ESXi server when trying to mount the drive:

Sysinfo error on operation returned status : The NFS server denied the mount request. Please see the VMkernel log for detailed error information

So here it is, this VMware KB article was mostly no help ( as it referenced using 2008R2, which I have working with no issue, it was 2012 when the wheels fell off.

Then I found this nugget in another KB article, "Ensure the NFS server supports NFSv3 over TCP. ESX/ESXi does not use UDP for NFS. "  ( ) Which lead me to think, what version of NFS is Windows NFS?

In 2012, go to the "Services for Network File System" manger, right click on Server for NFS. Change the protocol from "TCP-UDP" to just "TCP" and whammo, it now works with ESX server with no issues. Awesome...


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