After most recent Microsoft update, there's a warning message about a ~$ file which appears grayed with same file name. Why is this appearing and how

[Carol P 2harbors]

After the most recent Microsoft update, my excel file when saved has a warning message about a ~$ file which appears grayed and uses the same file name. I can't access it but I see a warning message. Why is this appearing and how do I stop it? I can't access the file itself. Warning message is downloaded.

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