ADB device list empty

Hey there,
when I came back to work this morning, I found both of my
Quests unable to be listed under adb devices. I tried Mac and Win but
the list won't get populated.
In difference to yesterday I realised
that every time I connect a Quest to a computer the Quest will ask to
confirm: "Allow Access to Data. The connected device will be able to
access files on this headset." This wasn't there before remains come
back every time.