diff --git a/Group Policies Objects/Default Domain Policy/Registries.md b/Group Policies Objects/Default Domain Policy/Registries.md
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+# Registries
+
+## Disable Co Installer
+
+`HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Device Installer`
+
+DisableCoInstallers -> REG_DWORD -> 1
+
+https://www.bleepingcomputer.com/news/microsoft/how-to-block-windows-plug-and-play-auto-installing-insecure-apps/
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