Win 10 - Using SFC /scannow to check your PC for errors

SFC (System file Checker) is commonly used to check and correct a PC for OS errors but at the moment it returns a spurious error that you may be concerned with because it involves Windows Defender. Don’t worry as it is a incorrect flag:

https://support.microsoft.com/en-ie/help/4513240/sfc-incorrectly-flags-windows-defender-ps-files-as-corrupted

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