I've recently upgraded to Outlook 2013 (it's been a bit underwhelming), and it looks like somehow my AutoArchive setting was turned off. No problem, I turned it back on with File | Options | Advanced | AutoArchive Settings... | Run AutoArchive every X days. However, I'd like to go ahead and run it right now. That used to be possible with the Tools | Options menu in 2007, but I can't find it in 2013. Am I blind?
Is the manual archive option what you're looking for? If so, it's available from