virtualbox.org

I'm using VirtualBox 5
Host OS: Windows 8.1 Pro x64
Guest OS: Windows 7 Pro x64

Drag and drop works first few times, afterwards the guest freezes.

Task Manager on guest reveals vboxtray.exe using 100% CPU.

Only way to recover is to force close the VM.
This happened multiple times.

Please read Minimum information needed for assistance and provide zipped attachment of the VM log file and the guest settings.