Drag and drop inside guest doesn't work after installing Guest Additions

[ramoncio]

I have been testing Virtualbox for some months and it works really great, very good job guys! But I have found a strange issue, and can't find a solution here. Last days I am testing VBox with windows 7 (64bit) embedded guests. In my latest builds, everything works fine until I install Guest Additions, then drag and drop (in windows explorer and desktop) stops working completely in guest. If I uninstall Guest Additions then it starts working again. Also I get some errors trying to run some exe files (mainly installers) from host shares. But if I copy the directory to my desktop or some network share, then the same installers work just fine. It happens with v. 5.0.10 and also with latest 5.0.12 (with their respective Guest Additions versions), I'll try with older/stabler versions. I haven't had these problems with Windows 7/8 guests, maybe something related with Windows Embedded. If I install that same image to a real computer, drag and drop works just fine. Any ideas of what might be happening? My host has Windows 8.1. Please see log attached. You can see the thread I opened in forum here: ​https://forums.virtualbox.org/viewtopic.php?f=2&t=75253&p=349185#p349185

Thanks in advance!

[mpack]

To avoid the same confusion that the OPs same rather poor choice of title caused in the forums: the OP is saying that drag and drop inside the guest stops working. This is not the typical host<->guest DnD complaint.

[ramoncio]

I agree mpack, but can't find how to change ticket's title, at least from my Mobile...

[ramoncio]

It got fixed after trying the same vdi in a Linux Mint host with VBox 4.3.30, reinstalling 4.3.30 GAs and booting the vdi back in Windows 8.1 5.0.12 host, then DnD worked fine, even after upgrading to GA 5.0.12. Here is the log with working DnD in Windows 8.1 host, with both GAs. Read the forum thread for more info.