I have a reasonably complex VBA prog running in a spreadsheet. It takes a couple of hours to run and so I set it going before I leave work. At the moment on finishing, it merely exists from Excel. I'd like it to force the pc to do a shutdown and reboot. Any suggestions?

Issue a "shutdown -r" command line? You can also give it a time parameter to give excel a bit to exit gracefully.

How can I do that? It's running unattended VBA so no command line interface. I need to find a VBA solution.

use Shell()