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Try copying the ISO into the default Hyper-V folder and mounting it from there.<br />
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If it works then check the NTFS permissions on the ISO folder. Something may be up there. Try creating a new ISO2 folder and copy the ISO into it. Does it mount from there?
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Try copying the ISO into the default Hyper-V folder and mounting it from there.

If it works then check the NTFS permissions on the ISO folder. Something may be up there. Try creating a new ISO2 folder and copy the ISO into it. Does it mount from there?

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For some reason I had to just close and re-open the console and then it worked fine
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For some reason I had to just close and re-open the console and then it worked fine

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I've requested that this question be closed as follows:<br />
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Accepted answer: 0 points for dancomputerman's comment <a href="https://www.experts-exchange.com/questions/28518075/hyper-v-Inserting-disk-failed.html?anchorAnswerId=40333478#a40333478" rel="ugc">#a40333478</a><br />
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for the following reason:<br />
<br />
closing then re-opening the console did the trick
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I've requested that this question be closed as follows:

Accepted answer: 0 points for dancomputerman's comment #a40333478 [https://www.experts-exchange.com/questions/28518075/hyper-v-Inserting-disk-failed.html?anchorAnswerId=40333478#a40333478]

for the following reason:

closing then re-opening the console did the trick

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For some reason when I try to mount an iso as a dvd drive, hyper-v throws the error:<br />
Inserting the disk failed. &nbsp;The operation on computer ACME-VM-HOST-1 failed.<br />
The iso is on a local drive under an iso folder
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For some reason when I try to mount an iso as a dvd drive, hyper-v throws the error:
Inserting the disk failed.  The operation on computer ACME-VM-HOST-1 failed.
The iso is on a local drive under an iso folder

hyper-v Inserting disk failed

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

Servers are computing devices that are similar to desktop computers in that they have the same basic components, but are significantly different in size, configuration and purpose. Servers are usually accessed over a network, and many run unattended, without a computer monitor, input device, audio hardware or USB interfaces. Many servers do not have a graphical user interface (GUI), and are configured and managed remotely. Servers typically include hardware redundancy such as dual power supplies, RAID disk systems, and ECC memory, along with extensive pre-boot memory testing and verification. Critical components might be hot swappable, and to guard against overheating, servers might have more powerful fans or use water cooling.

Server Hardware

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.