Keywords: Windows Server, Windows Server 2019, Windows Server Storage Space, Windows Server Storage Pool, physical disk, lost communication, Warning, Error, replace, replace disk
If you are running Windows Storage Space on USB disks, when you change disk cache settings, or accidentally disconnected one of the USB disk from Windows Storage Space (With minimum 1 disk fault tolerance, e.g. Parity, Mirror), or due to other reasons that caused one of the physical disk showing error or warning from Windows Server Manager
Method 3: Import proxy settings by using Registry file
1 Save desired proxy settings to a text file then change file extension from “.txt” to “.reg”
e.g. Save following text to “proxy.reg”
Windows Registry Editor Version 5.00
2 Double click on “proxy.reg”
3 Click on “Yes” if you see this Window
4 Click on “Yes” to continue
5 Now the proxy settings is imported, click on “OK”.
The application encountered an error while attempting to change the state of ‘New Virtual Machine’.
‘New Virtual Machine’ failed to start.
Synthetic SCSI Controller (Instance ID xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx): Failed to Power on with Error ‘General access denied error’.
Hyper-V Virtual Machine Management service Account does not have permission to open attachment ‘D:\vm.vhdx’. Error ‘General access denied error’.
Note: Other similar errors which is related to virtual hard drive (vhd, vhdx) permission issue when starting the Hyper-V virtual might also be fix by using following method.
Remove the virtual hard drive from virtual machine via Hyper-V Manager then reattach the hard drive
1 We need to get the SID of the virtual machine, usually it will be displayed in the error dialogue. If you have the SID continue with step 2, If not, follow the steps below:
1.1 Open the Run window by using Win + R key combination.
1.2 Type virtmgmt.msc and hit “OK” button
1.3 Write down the name of the virtual machine which is having perimssion issue.
1.4 Use key combination Win + X, click on Windows PowerShell (Admin) to open PowerShell window. Type following command and hit Enter key (Replace Name of Virtual Machine to your virtual machine’s name)
Get-VM 'Name of Virtual Machine' | Select-Object VMID
2 Enter following command in PowerShell to grant permission for this virtual machine to attach the virtual herd drive. ()
icacls "<Path of .vhd or .avhd file>" /grant "NT VIRTUAL MACHINE\<Virtual Machine ID from step 1>":F
icacls "<Path of .vhd or .avhd file>" /grant "<Virtual Machine ID from step 1>":F
Tip: By default Hyper-V store virtual machine configuration files in “C:\ProgramData\Microsoft\Windows\Hyper-V”, hard drives in “C:\Users\Public\Documents\Hyper-V\Virtual Hard Disks”
Warning: You must confirm that your computer supports UEFI mode, otherwise you will not be able to boot into the system after the conversion. It’s always good to do a backup before starting to convert.
1 Open an elevated command prompt (Win + X, Select “Command prompt (Admin)” or “Windows PowerShell (Admin)”)
2 Type following command and hit Enter key. (If the current MBR disk has four partitions, the following command will fail and return this error “Disk layout validation failed for disk 0”, you can try to delete one if not required and convert again)
mbr2gpt /convert /allowfullOS
3 Reboot, start into BIOS, change BIOS mode from legacy or CSM to UEFI (You might need to check which key to press to enter BIOS, different motherboard has different keys)
“*Something settings are hidden or managed by your organization.”
If you have encountered these messages, try following methods to fix it:
1 Use key combination Win + R to open then Run window
2 Type cmd.exe then hit Enterkey
3 Type or copy and paste following command to the command prompt window and hit Enter Key to run the command. (NOTE: If failed due to permission issue, Instead of Step 2, Use key combination Win + X, then Click on Command Prompt (Admin) or Windows Powershell (Admin), then continue from step 3)