virtualbox guest additions download ubuntu 14.04

The currently assigned host key is shown on the status bar at the bottom of the Virtual Machine window. You can press the host key at any time to uncapture the keyboard and mouse (if it is captured) and return them to normal operation. This will cause the Virtual Machine to automatically capture the keyboard every time the VM window is activated and make it unavailable to other applications running on your host machine: when the keyboard is captured, all keystrokes (including system ones like Alt-Tab) will be directed to the VM.

You have the Auto capture keyboard option turned on.

Here are the two messages that appears when I start Ubuntu the first one relates to keyboard (mostly), the second one relates to mouse: I cannot use mouse in Ubuntu (I installed it using my keyboard). I checked other questions on similar problems, but couldn't find a suitable solution.

When I start Ubuntu, I cannot make my mouse work in the window that it operates it disappears in the window most of the time.

I installed Ubuntu 14.04.2 (64 bits) to my Mac OS X 10.9.5 (64 bits) using Virtual Box version 4.3.24.

Virtualbox guest additions download ubuntu 14.04