Executable file-type handler

What lives here

Tells Windows HOW to run .exe/.cmd/.bat files themselves.

What changing it does

Rewriting how executables launch means every program you start goes through whatever this sets — the mechanism behind 'every exe opens in notepad' breakage and some ransomware tricks. Only merge this if it comes from a repair guide you trust.

Risk level: danger. A .reg file from an unknown source touching this location deserves real scrutiny before you merge it.

Deciding whether to trust a file at all? Read the guide: Is this file safe to open?