Trying to set up a new Windows 10 laptop which had Dropbox already installed, in S mode. Signed in to Dropbox (used on previous machine) OK but Dropbox not appearing in File Explorer. I can open an existing Dropbox file in Excel using 'Open with' - and can save it - but cannot create a new file in Excel and save it to dropbox because cannot add Dropbox as a location. Don't want to exit S mode; anyway the Microsoft page on S mode says you can 'save your files to ... Dropbox', so it's not S mode blocking it. But, while WIndows 10 recognises the Dropbox App, it does not recognise dropbox as a location. And yes, I have tried uninstalling, reinstalling, system restart but still unable to save new files. Any ideas?