Hyper-V Virtual Machine(s) fails to start with the error "An error occurred while attempting to start the selected virtual machine(s)" after Backup Exec is installed on Windows 2008 R2 Host machines.
'A device attached to the system is not functioning.'
Hyper-V Virtual Machine(s) fails to start with the error "An error occurred while attempting to start the selected virtual machine(s)" after Backup Exec 2010 is installed on Windows 2008 R2 Host machine.
This issue is caused due to the timing issue caused by backup application running on Windows server 2008 with FSDepends.sys and VHDMP.sys. For more details refer to the Microsoft Knowledgebase article http://support.microsoft.com/kb/2013544
To resolve the above issue set the FSDepends.sys to a start value of Boot (0x0) by following the steps below:
1) Launch the registry editor.
Warning: Incorrect use of the Windows registry editor may prevent the operating system from functioning properly. Great care should be taken when making changes to a Windows registry. Registry modifications should only be carried-out by persons experienced in the use of the registry editor application. It is recommended that a complete backup of the registry and workstation be made prior to making any registry changes.
2) Browse to the registry key "HKLM\SYSTEM\CurrentControlSet\Services\FsDepends"
3) Under the "FsDepends" key, change REG_DWORD value "Start" from "3" to "0"
4) Restart the server.
Backup Exec 2012
Backup Exec 2010
Windows 2008 R2 Hyper-V Hosts