Chrome Erweiterung deaktivieren

Its a DWORD value.

Try navigating to HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Adobe\Acrobat Reader\DC\Installer

If ENABLE_CHROMEEXT key is there, you can select the value > right-click > Modify and toggle its value.

If its not, right-click Installler > New DWORD Value.