Why won't WinZip or UnRAR open a Minecraft .jar file?

Episode 895 (1:13:19)

William from Redlands, CA

Leo thinks the Minecraft.jar is obfuscated or further encrypted, so he can't get into it. He wants to install modifiers for his Minecraft game. Chad of OMGCraft says that's not the way he'd want to go about it though. Chad says to use MCPatcher, which will patch the mods he wants into the Minecraft JAR files. This program will let him install his mods without having to do any coding by hand.

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