Thank you both for the quick replies. This is my first stab at building a customized msi installer and pushing it through altiris so I'm learning a lot as I go.
That filter makes a lot of sense now that I see it. Thanks.
As for my detection rule, I just have in the drop down box the package I created (screenshot). This seemed to work in that at least if user had it installed, it wasn't reinstalled over and over. Is this only good for me for now because the next version of flash 11.x hasn't come out yet?
When I look at registry on a machine with package installed I see a GUID matching Flash 11 with Version Major and Version Minor (screenshot).
If I change the MSD policy to be applied just to the 10.x Filter, do I still need to worry about applicability rule?
I'm not really sure how to build the applicability rule if so. If I build an applicability rule something like this, would that work? I'm thinking it wouldn't because if someone updated their flash, would the GUID key be different?
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\adobeflash11guid
VersionMajor < 11
thank you again!