Some antivirus software may rename the file from .reg to .efw (e.g., FLRegkey.efw ) to prevent it from running automatically. If this happens, simply rename the file extension back to .reg before executing it.
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While .reg files are native to Windows, Image-Line Support also utilizes them for macOS by placing the file manually into the Library/Preferences/Image-Line directory. Why Downloading from Google Drive is Highly Dangerous Some antivirus software may rename the file from