I have used Dropbox for many years with no problem. Recently, I have had the following problem on my PC. If I try to delete a file in a Dropboc subflder with WIndows Explorer, it hangs, reporting "Preparing to recycle from Dropbox". WIndows Explorer deletes files in the normal way if they are NOT ina Dropbiox folder. In addition, I can delete files in the Dropbox folders using say Photos or Powershell. SOme other functions in Windows Explorer do not wrk in Dropbox fodlers, for example renaming files.