VirtualBox – Change Focus from Guest to Host and Vice Versa (Windows Host)

I use Windows 7 host with Ubuntu Server and Centos Minimal guest, sometimes when I move mouse cursor into virtualbox window it will disappear, even I’ve tried to move the mouse everywhere the cursor could not appear outside virtualbox window. I just found that pressing RIGHT CTRL key will bring the cursor back outside virtualbox window


VirtualBox – Error REGDB_E_CLASSNOTREG (0x80040154)

I’ve upgrade my Oracle VirtualBox on Windows box recently and after restart this box I got error message REGDB_E_CLASSNOTREG (0x80040154). To resolve this problem, just invoke these commands:

VBoxSVC.exe /ReRegServer
regsvr32.exe VBoxC.dll