Vista - Determine default application

I'm looking for a way to determine remotely whether a given computer has
Adobe Acrobat or Adobe Reader as its default PDF viewer. (My
organization is controlling concurrent Acrobat usage with a key server,
and I want to track down who's using Acrobat instead of Reader as their
default viewer.) I can handle scripting in either VBScript or
PowerShell. Does anybody have any hints?

--
David
Stardate 8598.4

>That may tell you whether Adobe is (or once was)
installed. Though I don't have any "acrobat" key on
my system. But for finding the default program you
need to check HKCR\.pdf
The default value there is a class name that has a key
in HKCR. For instance, I have:

FoxitReader.Document

So a PDF on my system is a FoxitReader.Document.
I then look under:

HKCR\FoxitReader.Document\shell\open\command\

to get the executable path of the default program.
If I later allow Acrobat to be the default program
then it will overwrite the HKCR\.pdf default value
"AcroExch.Document" or some such. That won't affect
the FoxitReader.Document key. It will only affect
which key Explorer is led to when a .pdf is double-clicked.

mayayana wrote:Thanks, mayayana. That's exactly what I was looking for. I don't care
what happens if the default handler is something other than an Adobe
program; all I want to find are those computers running Acrobat
Professional as the default, so I can change it (to anything else).

In the short term, I'll probably use psexec.exe to run reg.exe on the
remote system so I can look at the key under HKCR. It's not a script,
but it gets the job done.

--
David
Stardate 8598.8

"David Trimboli" <trimboli@xxxxxx> wrote:
%comspec% /K assoc /?
%comspec% /K ftype /?

Let them run on the clients via a scheduled task or logon script.

Stefan