[Mozilla Enterprise] Stop Firefox from creating a new profile on upgrade

[Klaus Hartnegg]

Am 01.10.2019 um 23:00 schrieb Mike Kaply:
> We're also making a change so 64 bit Firefox installs in the same
> directory as 32 bit (which is causing the new profiles).

Oh, no!

You just learned the hard way that not following rules causes problems.
Now instead of fixing the underlying bug you want to break another rule.
Guess what? That will cause more problems.

Every deployment solution, every inventory tool, and Windows itself
assumes everywhere that 64-bit programs are installed in C:\Program Files.

How about this:
When Firefox is installed in its default directory, it uses the default
name for the profile directory.
Only if somebody installs it in a non-standard directory, it uses a
non-standard name for its profile.

Then all users who use defaults will get what they expect, and those who
do not use defaults will get what they deserve: a surprise.