Analysis of information sources in references of the Wikipedia article "System file" in English language version.
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[...] system files. These files are created and maintained by the operating system and are necessary for the system to perform its many functions. System files are used by many commands and subroutines to perform operations. These files can only be changed by a user with root authority. [...]
When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether.
