Roadblock #1 for VB installers: MDAC

Dan Kegel daniel.r.kegel at
Sat Oct 22 10:49:59 CDT 2005

A lot of VB apps use MDAC (
They tend to include mdac_typ.exe, the mdac installer, and run it, but
Wine doesn't seem to run it properly. (I'm testing using mdac 2.7 sp1, fwiw.)

First, the MDAC installer refuses to run unless the registry key for IE6
is present.  (OK, that's easy to work around... if you're a programmer.
It probably ought to be a winecfg pulldown.)

Second, even if the MDAC installer runs, all it does is install a bunch of
directories under c:\windows\RegisteredPackages.  The DLLs needed
by the VB app are locked up in .cab's in those directories.
In the app I'm trying to install, the installer then fails with
err:module:import_dll Library MSDART.DLL (which is needed by
L"C:\\windows\\system32\\msadox.dll") not found
 Something, somehow, is supposed to be triggering an unpack, but it's
not happening.
for a discusion of how the unpacking is supposed to go on Windows.)

I've filed a bug report at

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