If a checksum (MD5/SHA256) was provided where you downloaded the file, verify it using 7-Zip’s built-in CRC tool (Right-click > 7-Zip > CRC-SHA).
Could you clarify the where you encountered this file to provide more specific instructions? COMOS Installation and Setup - Support RLS - 2_comp.7z
Based on technical naming standards, "RLS" often refers to specific data types: If a checksum (MD5/SHA256) was provided where you
If it is a software patch (like COMOS), the archive might contain an executable (.exe) that was renamed to .7z for easier distribution. RLS - 2_comp.7z
Use the command p7zip -d "RLS - 2_comp.7z" . 3. Handling Potential Contents