Utility System File Checker gives an administrator the ability to scan all protected files to verify their versions.If the control file system detects that a file has been overwritten, it retrieves the correct version of files from the cache folder (% systemroot% \ System32 \ Dllcache) or the Windows installation source files, then replaces the incorrect file. To run the System File Checker, you must log on as administrator or a member of the Administrators group. If the cache folder is damaged or unusable, you can use the sfc / scannow.
The sfc / scannow (System File Checker) analyzes the integrity of all protected system files and replace those damaged, altered or damaged versions with the correct versions (if possible) but we see together how to proceed:

1. Open a command prompt with administrative privileges, type sfc / scannow followed by Enter.

NOTE: This may take a few minutes.

2. When the scan is complete, Windows will give us back a message integrity;If everything goes well the message back "No violation of integrity found.

NOTE: If the command sfc / scannow unable to resolve the problem, then you can groped running a system restore using a previous restore point that we will return the error log file.

3. To view and analyze the file may take different paths: the action is recorded both in the C: \ WINDOWS \ logs \ cbs \ CBS.log, but to make things easier we can see only the specific items of SFC with with [SR] in CBS.log file. This can be useful to show what files SFC could not adjust automatically if you want to manually intervene.

4. Open a command prompt with administrative privileges and type:
findstr / c: "[SR]"% windir% \ logs \ cbs \ cbs.log>% userprofile% \ Desktop \ sfcdetails.txt followed byEnter, in seconds sfcdetails.txt will file on the desktop with the details of the SFC scan CBS.log file.

NOTE: A wrapped checks are completed we can delete the file.

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