Drag and drop doesn't work between host and VirtualBox on Windows 7

My host is 64 bit Windows 7 bit where my VirtualBox is running 32 bit Windows 7. I have installed guest services and I have enabled drag and drop in Settings >> General >> Advance to bidirectional.

I can copy/paste text file between host and virtual box and copy/paste or drag/drop doesn't work.

I have tried one of the solution here by Sam there (Kill VBoxTray.exe) but it didn't work. I see other threads like this but there are no answer.

Solution 1:

Open windows explorer as administrator and drag from there:

• open Windows directory
• Locate explorer.exe
• Right click, run as administrator

Tested on 5.1.8, host and guest both windows 7 x64, using guest additions.

Note: You might need to shutdown and start again the guest os, at least for me the guest bugs badly when I try to drag a file from a non UAC explorer window.