Windows 10: Is sfc /scannow safe?

I have heard that running the "sfc /scannow" command can cause data loss, is this true?

:)

 

SFC scannow not working but verify only is working

there is no problem in chkdsk I've checked When I select command prompt and sfc scannow from f8 and repair.. it shows that a reboot is required for pending repair and pending renames folder in winsxs is full of files.. what should I do??

 

Cannot run sfc /scannow to completion despite being in safe mode and the PendingDeletes and PendingRenames folders exist under %WinDir%\WinSxS\Temp

Following this guide Use the System File Checker tool to repair missing or corrupted system files - Microsoft Support I start Command Prompt as administrator.





I run this successfully

However on running

It fails at 68% complaining about

The original guide suggests trying in safe mode, which I have to no avail. 
I note that the PendingDeletes and PendingRenames folders exist
under %WinDir%\WinSxS\Temp do exist as the guide further suggests. 
The folders have many files in them.

I am on Windows 10.

I have also tried the steps in: How to Fix: 'sfc /scannow' Fails, Won't Complete my sfcdetails.txt file does not have any errors in it and after doing most of the steps I am have been recommended to try using a windows repair dvd, getting the files from a known good source or running a repair install (if I manage to try this and it also doesn't work I'll update this post)

 

sfc /scannow error repair

Hi,



Thank you for writing to Microsoft Community Forums.



We appreciate the efforts you have taken in trying to resolve this issue. I have analyzed the error logs that you have shared and I would suggest you follow the steps mentioned below:

1. Type Command Prompt in the
   search bar on the Taskbar.
   
2. Right click on the Command Prompt icon and select
   Run as administrator.
   
3. Now, paste the following command and hit Enter:
   DISM.exe /Online /Cleanup-image /Restorehealth
   
4. Once the DISM command is executed, we would suggest you to run sfc /scannow again.
   

If the integrity violations are not repaired after running sfc scan, the best option will be performing a repair installation. A repair installation will repair all the corrupted files.



Refer the steps mentioned below:



Download the Windows 10 Media Creation Tool (MCT) and use it to perform a repair installation
of Windows 10. We have a video that can show you how if you aren’t sure



Let us know the results.



Regards,

Nikhar Khare

Microsoft Community - Moderator