adb problems

[redheadplantguy]

hi all. for some reason, my adb is glitching.
nothing is hooked up, but it says
"list of devices attached 0123456789abcdef offline"
sooo, i cannot connect anything. i have files from where i was running virtualbox, could that be causing the problems?

 

[MartyHulskemper]

Does this persist even after a reboot? I had some funky problems with my drivers... What OS is your desktop on?