How to Fix sfc scannow: System File Checker to Repair Windows System Files

Use System File Checker (sfc) to Fix Windows Errors: SFC (System File Checker) is a Windows command used to repair several Windows System files. It verifies and also repairs the important system files of the Windows operating system.

These system files also include a number of dll files. So, if you are having certain issues related to dll files in the Windows operating system, then running sfc scannow command is always one of the safest options to try.

The sfc command is available in almost all of the Windows operating systems including:

  1. Windows 10 (Latest Windows at the time of writing this post)
  2. Not so much widely used Windows 8.1 and 8
  3. Windows 7
  4. Windows XP and Vista

The sfc command can be run only through the command prompt.

Note: When you run the sfc command, please make sure you open the command prompt as Administrator only. Otherwise, the sfc command may not work. Follow the instructions given below to open the command prompt as Administrator.

How To Open Command Prompt As Administrator

Opening the command prompt (or cmd for short) as an Administrator is very simple. Just follow the easy steps given below:

  • Click on the Start Button.
  • Type cmd in the search bar.
  • Right click on cmd and choose Run as Administrator. 
  • This will open the command prompt as Administrator.
  • Now you can safely use sfc command.

How To Open Command Prompt As Administrator

The sfc command comes up with a number of available options. However, in this article, we will limit our discussion to only one sfc option, that is, sfc scannow. Other available options are:

  • verifyonly
  • offwindir
  • offbootdir
  • scanfile

There are some other options as well but those are beyond the scope of our discussion for sfc scannow. Now we will try to build our focus on sfc scannow, which is one the most widely used sfc commands.

It is not only used to check and repair system files but also to fix a number of Windows error codes.
The sfc scannow command will take into consideration all the Windows files (including the dll files).

If it finds anything suspicious with any of the files it scans, it will simply replace it. We advise you to please be patient while using this command because it may take up to 15 minutes to scan the entire system and report back the results. So let us not waste any time further and dive directly into the implementation of sfc scannow command.

How To Use sfc scannow Command To Repair Windows System Files

In this section, we will be giving a complete and detailed step by step guide to using sfc scannow command so that you can easily repair Windows System files and also fix a number of Windows operating system error codes. So let us get started.

  • First of all, open the command prompt as Administrator as explained above. This is because the sfc scannow command works only when the command prompt is launched as an Administrator. Otherwise, it won’t work at all.
  • After the command prompt is up, type sfc /scannow in the command prompt and hit Enter key.
  • Now the System File Checker (sfc) will start scanning the entire system for Windows System files and dll files. Please note that it may take some time depending upon your RAM and number of files.
  • One it is completed, it will show you the final report.
  • Now, restart your system so that changes are reflected.
  • That’s all. You have successfully used sfc scannow to repair the Windows system files. It was easy, isn’t it?

So it was all about we wanted to share about the System File Checker. Hope you got the actual reason of why we sfc scannow command and how do we do it. If you still have any doubt or you are facing any other issue, feel free to reach out to us via comments. We are always happy to help. Thanks.

Abdullah is the founder of GamerAfter. He is passionate about blogging and wants to share knowledge with others. His passion, dedication, and quick decision-making quality make him stand from others.

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