How can I find out who is using a “file in use”?
The scenario typically looks like this: you want to delete, move, or rename a file, or maybe even just use it in another application and you get a message that says you can’t. The message indicates that another application is using the file.
Great. “What application?” you ask.
It wouldn’t be that hard for Windows to tell you, but as it doesn’t, you’ll need to do a little investigatory work yourself. Fortunately, there’s a free tool.