Virtualbox - drag and drop stopped working

[Sheridan]

We use Vbox 5.1 to run a W10 VM (on W10 hosts) fro programming course etc - its been working brilliantly but suddenly we've noticed that most of them have now stopped working with drag and drop/copy/paste.

 

The option is still set to bidirectional, but dragging shows the 'no entry' icon, and paste is disabled. Nothing about the VM has been changed and the W10 hosts are all the same (ironically some still seem to work!)

 

The host log shows we've got all the right things enabled:

 

00:00:02.336157 Shared clipboard service loaded

00:00:02.336174 Shared clipboard mode: Bidirectional

00:00:02.348795 Drag and drop service loaded

00:00:02.348816 Drag and drop mode: Bidirectional

00:00:02.373846 Guest Control service loaded

 

They just don't work - what caused them to suddenly stop working is a bit of a mystery!

[Steve21]

Assuming they've had updates on the hosts, did you check if Win10 did anything silly with uninstalling the guest additions pack? Might be worth trying a reinstall on one of the broken ones and seeing if that part fixes it

 

Steve

[Sheridan]

The GA is still installed on the VM - and its set to immutable so no changes are saved when its shutdown. Some of the working machines have had the same updates as the ones that aren't working - mainly routine security updates and a CU, but in this case they're all the same hardward, same image and 70% have stopped working, 30% are still working.