Abdelrazak Younes wrote:
But when I install the Lyx (both the standard version or the
alternative installer), the installer will *automatically* change
this option to "Yes". (it seems very strange)
I hope that the installer informs you before doing this change and that
the old config is restored back.
The standard installer doesn't change this setting. MiKTeX's default is
"Ask me first" and it provides an option to change this on the window
that is displayed when the first package is installed.
Joost