SFC SCANNOW

SFC/scannow is the most common command of System File Checker. This command is used to scan the integrity of all protected system files, and then it will replace the incorrect, or corrupted system files with a cached copy once it finds that the protected system files are overwritten by incorrect files.

How to run sfc/scannow? Here is the tutorial.


Run sfc/scannow in Windows 8 and above versions


  1. Press the Windows icon on your keyboard and type cmd in the searching box. Or press the Windows key and the X key on the keyboard.
  2. Run Command Prompt as an administer by giving a right click on Command Prompt and selecting Run as administrator.
  3. When the Command Prompt window shows up, please type sfc/scnnow and click Enter on the keyboard.
  4. Wait until the verification is up to 100%, and you will see the scan results.
  5. Restart your PC if this is not done automatically.

You may receive one of the following messages, some of which indicate errors:

Fix Common SFC Scannow Errors


Although sfc/scannow can automatically repair the most problems related to Windows, in some cases, there are some errors showing up when you use the command. Here are the most common errors:

Is SFC Scannow Good to Run?

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