You may need to restart Windows when it's done if it finds problems. This performs an immediate scan of your system and will replace files as necessary.
To run the tool, just type sfc at the command prompt followed by a space and then any of the following common options:
Depending on how you installed Windows, you may or may not need the installation media, but usually you won't. If System File Checker finds a mismatch, it replaces the original file. Windows includes the command line tool System File Checker, which scans several thousand basic Windows files, comparing them against the original versions that shipped with Windows or, depending on the files, that have been updated through Windows Updates. Sometimes, these problems slip by Windows unnoticed. But even with this ability, system files can become corrupted or the wrong versions of system files can get installed by errant applications. You typically won't even be notified when it happens. Windows can usually detect when a system file is missing and replace it for you without any intervention on your part. That way, it will run with elevated privileges every time. Better yet, pin it to your Start menu or taskbar, right-click it and choose Properties, click the Advanced button, and choose Run as administrator. To do that, right-click the Command Prompt icon and choose Run as administrator. That will let you know if the command exists and what options you can use with it.Īlso, many of these tools require that you run the Command Prompt with administrator privileges. If you have any doubt about whether they're available or if options are different, just open up the command prompt and type the command followed by /?. We're using Windows 8.1 for screenshots and details in this article, but most of these tools have been around a long time and are available in previous versions of Windows. You're zooming down the information superhighway getting things done when your usually-trusty… Read more How to Troubleshoot a Flaky Internet Connection
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