Hello,
Since about 4 months ago, we are having trouble when trying to connect a USB drive to our virtual machines.
We have 2 Dell PowerEdge R430 servers with Windows Server 2012 and Hyper-V installed, when I connect a USB Drive while the physical machine is running, I can't attach the USB drive to the virtual machines, for it to work I need to restart the physical machine with the USB drive already plugged in, after doing this I can connect the USB drive to the virtual machine again, but, if for some reason I unplug and plug it again, it shows me this error:
NOTE: I was going to insert an image here, but Technet wouldn't allow me, because it says my account is not verified, so I've uploaded it to: h t t p s : //s14.postimg.org/hwk41jykx/1471635468078_remmina_2016_12_2_19_27_55_491706.png
As you can see in the above screenshot, the disk is set Offline at Disk Management and I'm using Physical Disk Option at SCSI section in Hyper-V manager, this used to work before, but it started occuring this error at some point that I don't remember, maybe after any update, I can't say for sure.
This same error also occurs at the other server, which is equal to this one, but with different virtual machines.
I couldn't find any details on event viewer, so I can't figure out the reason for this error.
Please help, we use to change the backup media every week and it's obviously nonsense to reset the physical server once a week, every time we have to exchange the disk.
Let me know if you need any more details.
Sorry for the poor english.
Hugo Thebas