To add to this, in my experience, I sometimes found the "preview" pane of Explorer.exe holding open files and thus preventing moving/renaming/overwriting. This does not always happen, and I've used the preview pane to watch images/automatic screenshots being updated. But maybe some other Explorer extension is not as careful with allowing overwriting of files or it is an unfortunate timing issue.

In reply to Re^2: The process cannot access the file because it is being used by another process? by Corion
in thread The process cannot access the file because it is being used by another process?[Problem disappeared!] by BrowserUk

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