Seen that, only with a file named msvcrt.dll. Bugger won't move, and won't delete. What I found that did work was to copy it to where I wanted it, then I could delete it after rebooting. This is with ...

When you can't open, edit, or delete a file in Windows File Explorer, it's either still open in a program running in the background or something didn't close properly. Luckily, you can force delete, ...