I have a secondary drive linked to a VMWare Player Windows 8.1 machine from a Windows 7 host. Every day a number of randomly named folders are created on the disk root, all empty. To delete them you need admin rights, and I have to keep cleaning them every other day to not pollute the disk with tens of them.
Screenshot:
Any guesses on whether the host, the guest or VMWare is the one creating those folders?