Why does the message ‘this file cannot be run in DOS mode’ appear when I open a .dll file in notepad?

[Alexander Parker]

Hello guys and girls, I was tinkering around in a .dll file on notepad to change some setting on a game recently and I encountered an error. When I opened the .dll in notepad, i was met with weird jumbled letters and the sentence ‘This program cannot be run in DOS mode’. This message only happened after I’d opened and closed the game. Prior to opening the game, I was able to navigate the .dll file in notepad just fine.

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