MDAC Setup - Installation Best Practices
- Terminate applications that use MDAC:
- Certificate Server
- Internet Explorer
- Internet Information Server
- Microsoft Office
- Outlook and Outlook Express
- SQL Server
- SMS Server
- Visual Studio (All Products)
- MDAC setup installs new data access DLLs and updates DLLs which already exist on the system.
- If one or more of those DLLs is in use by some other application, it can lead to unsuccessful MDAC setup.
- Some applications that use MDAC DLLs run in the background, so sometimes the user is not aware of their existence.