If anybody like know...

i do not understand.

I have this code:

#import "C:\Program Files\Common Files\System\ADO\msado15.dll" no_namespace rename("EOF", "EndOfFile")

...

_ConnectionPtr Conn;

...

CoInitialize(NULL);

HRESULT hr = Conn.CreateInstance(__uuidof(Connection));

Conn->Provider = "Microsoft.Jet.OLEDB.4.0";

Conn->ConnectionString="Data Source=c:\\mydb.mdb;";

hr = Conn->Open( "","Admin","", adConnectUnspecified);

Whith My account this code work good, but when i try to start my program whith another user login, i have this error:

hr=0x800a0e7a -> Provider cannot be found. It may not be properly installed.

Why by my login program run normal, but by another login failed? OS Xpsp2 whith standart MDAC 2.8 installed.

Tthis is bug: sum keys in registry have no permissions for another users in system.