If a file has been modified, it’ll automatically replace that file with the correct version, thus saving you from the potential headache of having to troubleshoot the issue and replace the file yourself. Here’s how it works. If it did find a problem, it’ll notify you with a message detailing what it is. Normally, it’ll attempt to fix the problem automatically by replacing the corrupted file with a new, correct version of it. If it doesn’t, we can try another baked-in Windows tool, called DISM, to fix it. If this doesn’t work, you might have to consider a system restore to replace the corrupted file.

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