This article describes two different ways to check which
version of Microsoft Data Access Components (MDAC) is installed on a system:
- Use the Component Checker tool.
- Check the version information that is stored in the
Install and Use the Component Checker Tool
The most reliable way to determine which version of MDAC is
installed is to compare the version number of each MDAC DLL file to a list of
the DLL files that are shipped with each MDAC version. The Component Checker
can help you to do this. It checks the files on the computer, compares them to
a list from each version of MDAC, and reports the closest match.
install Component Checker, follow these steps:
- Browse to the following Microsoft Web site:
- Click the link to download Component Checker. When you are
prompted by the browser, save cc_<CPU_arc>.msi (a self-extracting executable file) to the desktop.
- On the desktop, double-click cc_<CPU_arc>.msi; this installs the Component Checker files to the default location, C:\CompChecker\.
To use Component Checker to check the MDAC version, follow
- From the Start menu, click Run.
- In the Open text box, type c:\CompChecker\CC.exe
and then click OK.
- In the Component Checker - Choose Analysis Type dialog box, select Perform Analysis of your machine and automatically determine the release version, and then click OK.
- The program attempts to identify the MDAC version on your
computer by scanning all of the core MDAC files and registry settings. This
process normally takes several minutes. When finished, you should receive the
The MDAC version that is closest to the version on your computer is 'XXXX'.
- Click OK.
- A summary of the Component Checker scan appears. Note that
the Dir, FileDescription, and FileSize errors can be safely ignored.
Check the Version Information Stored in the Registry
Although not the most reliable way to check the MDAC version,
checking the registry for the version information is an easy way to
double-check this information (if you are not experiencing any MDAC-related
The version information is found in the following key:
To check the registry, follow these steps:
- On the Start menu, click Run.
- In the Open text box, type regedit and then click OK; this starts Registry Editor.
- In the Navigation pane, drill-down to the following path:
- In the Details pane, look in the Name column for FullInstallVer and Version. Each of these keys will have corresponding version information
in the Data column.
- When finished, click Exit on the Registry menu to close Registry Editor.
Note that the version information stored in the registry may be
incorrect for versions of MDAC prior to 2.1 when compared with the versions of
the actual files. Windows 2000 installs version 2.5. Only versions of MDAC
later than 2.5 may be installed on Windows 2000.
Microsoft Data Access Components are available at the following Web site:
For additional information, click the following
article number to view the article in the Microsoft Knowledge Base:
Component Checker: Diagnose problems and reconfigure MDAC installations
Microsoft Data Access Components (MDAC) release history