Depends on file of course, each one with its own tricks. However, One solution I found was moving all the files out of the folder your bad file is in leaving only that bad file inside. Then Delete that folder. Then create a new folder & name it same as the folder you deleted so you can return your other good files into it. In this scenario, there seems to be some link between the folder & the bad file. Perhaps related to directory location. This scenario was when a file continually kept showing back up. It's worth a try, only takes a couple of minutes.

Need to do this whilst LW is closed of course.