When windows system files are missing or corrupted, this can often lead to windows not functioning correctly or even crashing entirely. This is also a useful step if you ever experience any kind of strange behavior or malware. After removing the malware it is a good to double check the windows system files with this utility.
This is a command line utility, so to open it you will go to your windows search bar and type in either ‘cmd’ or ‘command prompt’. Right click the command prompt program and choose to ‘Run as Administrator’.
At the text prompt type in
sfc /scannow
This runs the system file checker utility. You should be careful to let it finish running and not close it out in the middle of the run. In most cases it will complete in around 5 minutes and report that it verified system file integrity. If it finds an issue it will repair the missing or corrupted file from its local cache.
References:
Use the System File Checker tool to repair missing or corrupted system files. (n.d.). Support.microsoft.com. https://support.microsoft.com/en-us/topic/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system-files-79aa86cb-ca52-166a-92a3-966e85d4094e
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