You can't call CoInitializeEx with COINIT_MULTITHREADED if it's already been called with a different threading model specified. I don't believe the DAO library is thread safe. In order to access DAO from multiple threads, you'll have to create your own free threaded object wrapping whatever DAO calls you need, and syncronizing access to the DAO library. Mark

Make sure that it is an exe service rather than a dll service. A dll singleton loads a different instance per app. An exe will have only one instance. ed The nice thing about egotists is that they don't talk about other people. Lucille Harper