![]() ![]() When the disk shows unknown, it would not grant access for the disk since it could not be recognized in disk management when you double clicking the unallocated disk, trying to access or open it. ![]() I’d recommend using this fine code by Sam Boutrous, Get-ParentPath. Why Access is denied, cannot initialize disk Scenario 1, access is denied for unallocated not initialized disk before the initialization. Note: if you’ve got a lot of differencing or template disks in your environment, you’ll also need to resolve the parentpath for each disk, if it exists. Name -notcontains 'NTFSSecurity' )Īfter working, I’m now able to launch my VMs again! #Import the NTFSSecurity Module, if not available, prompt to download it If (( Get-Module ). If you’re running PowerShell v4 or higher, it will attempt to install the module for you. This depends on the NTFS Security Module being installed. Way too much work!Īll we need to do is get a list of our VMs, then iterate through each disk and apply the right Full Control perms. I didn’t like this approach because some of my VMs have more than one VHD (like my SCOM VM, six VHDs!), and I’ve got 8 VMs anyway. You could fix this by hand by getting the VMId of the VM and adding it with Full Control permissions manually. In this image below, you can see a new and working VM on the left, and a broken VM on the right. Something is wrong with permissions (namely, the VM doesn’t have Full Control rights to it’s VHD anymore. Somehow in rebuilding the volume, permissions were lost for some items on the drive, in addition to corrupting my Recycle Bin.Ĭan’t start any pre-existing VMs but are able to make a new one. In my case, this happened because I have a Raid of SSDs for maximum IOPs for my VMs (can’t stand something being slow!) and I lost a drive. ![]() VMName: Account does not have permission to open attachment All of my VMs were stopped, and wouldn’t start! When I tried to start one, I’d see this error:Īn error occurred while attempting to start the selected virtual machines: General Access Denied Error… Today, I woke up to a nasty error in the FoxDeploy Hyper-V lab. ![]()
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