virtualbox.org

Failed to open a session for the virtual machine linux.

The virtual machine 'linux' has terminated unexpectedly during startup with exit code 1 (0x1). More details may be available in 'C:\Users\kunal\VirtualBox VMs\linux\Logs\VBoxStartup.log'.

Result Code: E_FAIL (0x80004005)
Component: MachineWrap
Interface: IMachine {f30138d4-e5ea-4b3a-8858-a059de4c93fd}



try sc.exe query

i rebooted the system several times
uninstalled vb and installed it back many times
still problem not fixed

The error message also refers you to "VBoxStartup.log", though you don't mention trying that. Zip it up and attach it here.