[Bug 18070] Multiple apps need separate msi custom action server process due to COM/ MTA and/or isolation issues (Adobe CS3/CS4, Flash, Windows SDK 2008, Strawberry Perl, MS Office 2010)

https://bugs.winehq.org/show_bug.cgi?id=18070

--- Comment #131 from Dmitry Timoshkov  ---
(In reply to Zebediah Figura from comment #130)
> I've been looking at a proper solution for this.
>
> We already have the MSIServer service already implemented—it just doesn't do
> anything yet. I think the best way to fix this is to register the
> IWineMsiRemote* classes in the server process with REGCLS_MULTIPLEUSE, so
> not much change in infrastructure at all. I see two ways of doing this:
> either move all of the COM objects into msiexec.exe, or add an internal
> function in msi.dll. I like the first one for the sake of separation, but it
> does mean we need an internal idl.
>
> Any thoughts on this from anyone else?

Did you try to investigate how that's done in Windows, so you wouldn't need
to invent custom interfaces?