Failed to open a session for the virtual machine win7. Failed to open image 'G:\Virtual Box\grac41.vdi' for writing due to wrong permissions (VERR_VD_IMAGE_READ_ONLY).
- A non killable VirtualBox.exe is running holding a open file handle to grac41.vdi
- Note this process may not killable – either with task manager or process explorer
Start DOS BOX with ADMIN rights Start process Explorer ( V16.02 ) C:\tools> procexp Use process explorer and find Find Handle or DLL supstring : grac41.vdi VirtualBox.exe VirtualBox.exe 136.112 K 100.040 K 1972 Oracle VM VirtualBox Manager Oracle Corporation VirtualBox.exe 5068 File E:\VM_HOME\GRAC11204\grac41.vdi File E:\VM_HOME\GRAC11204\grac41.vdi In the file Handle window press right mouse button and select : CLOSE HANDLE