virtualbox.org

Hello,

I installed VirtualBox on my Windows 8.1 64 bit system. Now I tried to install Windows XP as a VM. Every time when I try to start the recently created machine to install the system, I get the following error message.

Can you help me to solve the problem?

This is from the security hardening feature, still a work in progress since version 4.3.14 (see the stickies)
If your host is malware-free, roll back to 4.3.12