Windows Phone Emulator was unable to install VHD on the virtual machine:

Question

After starting the Windows Phone 8 application Windows Phone 8 I get the following error report:

 Couldn't change synthetic disk drive of the virtual machine. 'Emulator WXGA.test' failed to add device 'Synthetic Disk Drive'. 'Emulator WVGA.test':Cannot attach storage media to the controller because the specific location is in use. 

Answer 1

Try running this on the command line (as administrator) gpupdate / force