I am developing an Excel spreadsheet which is stored on Dropbox (so when complete it can be shared with other users). When the spreadsheet opens I wish to be able to check in VBA code that the file is synchronised before proceeding. I cannot find out how to do this, and you seem to have an API for everything except Windows !!! All I can do so far is to check (using two Windows API functions) is that a) there is a valid internet connection; and b) that I can ping the Dropbox website. Any suggestions ??? Steve