Save the .rar file to a known location on your computer.
Right-click the Gridinsoft Anti-Malware 4.2.55.rar file and select "Extract Here" (using 7-Zip or WinRAR). Install: Run the extracted .exe installation file.
It is strongly recommended to download security software only from official or trusted sources to avoid malware infections.
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The file format ".rar" is a compressed archive. You will need a file extraction tool like WinRAR , 7-Zip , or WinZip to extract the contents before installation.