I ran into this issue today when trying to extend out the drive size on a data drive on our primary file server. After expanding the virtual disk in VMware, I brought up computer management (compmgmt.exe if you want to go command line quicker).
I expanded out the disk and immediately noticed that explorer didn't reflect that change after a refresh. Also, disk management could no longer access the disk to make any edits. I restarted the virtual disk service with no success. A restart also proved futile.
MAKE A BACKUP BEFORE RUNNING THESE COMMANDS!
After some quick research, here is the fix. Use DISKPART from an elevated command prompt. Just follow the commands below and choose the proper disk on your VM. After running the command, a quick refresh of explorer now shows the correct size.
Good luck!
