Recently I’ve noted a “Q:” drive letter on my computer which I can’t access, giving “Access denied”.
MOUNTVOLgives the following.
I can unmount it using
MOUNTVOL /D, but it comes back on reboot.
This volume has an entry under MountedDevices registry key, but I cannot determine where it comes from.
The drive letter does not appear inside
How can I determine where this Volume is coming from?
Drive Q comes from Microsoft Application Virtualization (App-V). You may have a Click & Run Version of Office installaed which internally uses App-V and this is why you see the drive.
You can hide it very easily by importing this .reg file to the registry:
Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] "NoDrives"=dword:00010000 "NoViewOnDrive"=dword:00010000