I am running VirtualBox 4.3.34 on Centos 6 host with Windows 7 guest, have installed guest additions, and also installed phpVirtualBox.
Previously, I was able to remote desktop with a Windows 7 client, but no longer can. I recently did a yum update which might have caused the problem.
I noticed that phpVirtualBox's "Remote Desktop Server Port" is crossed out and "Remote Display" is greyed out and not accessible.
What causes this? What do I need to do to enable remote desktop?