How To Redistribute DAO 3.6

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This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.


DAO version 3.6 is required for applications using DAO that need to read and write to Access 2000 .mdb database files.

More Information

Dao360.dll was released with Visual Studio 6.0 Service Pack 3. It can be found under the \os\system directory of the Service Pack 3 image.

To redistribute DAO 3.6 with an application, complete the following three steps.

  1. DCOM95 should be installed on Windows 95 systems that do not have DCOM installed. DCOM95 is distributed in a file called Dcom95.exe. A reboot of the system is required after installing Dcom95.exe. DCOM is required for the Mdac_typ.exe to work. DCOM is pre-installed on Windows 98 and Windows NT systems, so this step is only required for Windows 95.
  2. Install Jet 4.0, which is installed as part of Microsoft Data Access Components (MDAC) 2.1 or 2.5, but is not included in MDAC 2.6.
  3. Create a directory with the name DAO under C:\Program Files\Common Files\Microsoft Shared and copy Dao360.dll to this directory. In addition, Dao360.dll must be registered as a COM DLL. This can be accomplished by using the Regsvr32.EXE utility.
Visual Studio Service Pack 3, Mdac_typ.exe, and Ddcom95.exe can be downloaded from


For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base:

232053 INFO: List of Files Installed by MDAC 2.1 (GA)
191704 PRB: Unable to Load File to Register It During Setup
167523 How To Redistributing DAO with Your Visual C++ 5.0 Application
235507 BUG: DAO 3.6 Causes Debug Errors in MFC DAO Non-Unicode Builds
236991 PRB: Unrecognized Database Format Error with Access 2000 Database
198038 INFO: Useful Tools for Package and Deployment Issues

Article ID: 233002 - Last Review: Jun 19, 2014 - Revision: 1