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Download and install the (or newer) from Microsoft’s official site. Summary for 64-bit Users kernel32dll download windows 7 64 bit link
Windows will become unbootable. If the file is corrupted, follow SFC or System Restore above. While it might be tempting to download kernel32
Instead of searching for a download link, use these official methods to restore the file safely: kernel32dll download windows 7 64 bit link