virtualbox.org

I'm running VB4.3.6 on Win7, with a Debian guest (although another Puppy Linux guest has the same problem).
When I connect a USB device, it shows up on the Host, but not in the Device list for the guest to grab (there is a filter from the previous VB version where it worked), it just says 'X No USB Devices Connected'
In the Host USB Device list it's listed as Virtualbox USB/<VolumeID>, but 'vboxmanage list usbhost' says:
Host USB Devices:
<none>

Did you install the Extension Pack?

Sure, right version too.

I'm running the same Host and VB versions, except my Guest is Ubuntu 12.04 or 12.10. Both of those get newly plugged-in USB devices in the Devices menu. If I want to make the Guest auto-attach to the device, I add a USB Device Filter in Machine->Settings->USB. After that the device always shows up in the Guest when it is plugged-in. I ran VBoxLinuxAdditions.run in Linux to add the Guest Additions. This executable is on the CD image in VBoxGuestAdditions.iso, which is stored in the same directory where VirtualBox.exe runs from.

Perhaps:

- the ISO you're mounting within the VM is not the one from the current version of VirtualBox.
- you didn't install GuestAdditons in this particular VM.
- Debian upgraded the kernel, and you didn't re-run the GuestAdditions installer since then.
- the VirtualBox installation need to be repaired with its Windows installer.