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Permission error attempting to add disk to vm

I receive an error when I try to add a new hard disk to an existing virtual machine.

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NytroZ
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NytroZ
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Do you have limited permissions to perform this operation ?
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NytroZAuthor Commented:
We don't have any problems adding a disk to any other virtual machine.
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NytroZAuthor Commented:
The logged in user is a member of the domain admins group and assigned the Administrator role.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Is it just this VM, can he create a VM, and add disks to it.
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NytroZAuthor Commented:
It is just a single vm that we cannot add disks to.  All other vms on the same host do not have this problem.  He can create a VM and add disks to it as well.
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NytroZAuthor Commented:
I can add disks through the vSphere client but not vCenter.  I tried to remove the host from vCenter and re-add it but it didn't help.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Okay, so it's vCenter permissions.

Is this all users, Domain Admins, Administrators or a single user ?
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NytroZAuthor Commented:
All users.  The user that is attempting to add the disk is a part of the domain admins group and it has also been attempted using the domain administrator account.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
So, not a single user can add a disk to this VM?

If you do not have any strange permissions, I would create a new VM, and add the disks from the old VM to this new VM, very simple to do, because you have the existing configuration.
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NytroZAuthor Commented:
I only have the issue with a single vm on the host.  There are 3 other vm's on the same host that I have no problems adding a disk to.  The workaround has been to add the disk through the vSphere client instead of vCenter but I would certainly like to understand what the underlying cause is.  I suppose I would need to bring the vm down to add the disks to the new vm?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I would shutdown the VM,

Remove from Inventory.

Re-create the new VM Configuration, and add the disks.

adding changes through the vSphere Client directly to the host, can cause out of sync issues with vCenter database.
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