Microsoft KB Archive/257753

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BUG: MDAC 2.5 Silent Install Options Are Different Than on Earlier Versions

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Q257753

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The information in this article applies to:


 * Microsoft Data Access Components versions 2.5, 2.5 SP1, 2.6

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SYMPTOMS
If you install Microsoft Data Access Components (MDAC) version 2.5 or later using the silent install options that were available in earlier versions of MDAC, the installation will not be silent or the command will fail.

CAUSE
Microsoft rewrote the installation program of Mdac_typ.exe and changed the program's parameters.

RESOLUTION
To perform a silent installation of MDAC 2.5 or later use the following command:

"MDAC_TYP /Q:A /C:'DASETUP /Q /N'" This command may display a splash screen with the following text:

"Windows is now setting up Control Panel, which you can use if you want to adjust your computer settings later." This splash screen does not require user input and will close on its own.

After the installation is complete, the install program does not prompt you to reboot the computer. To complete the MDAC installation successfully, however, you must reboot the computer.

STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

MORE INFORMATION
In previous versions of MDAC, the following command performs a silent installation:

"MDAC_TYP /QNT" In MDAC 2.5, this command prompts the user with the license agreement dialog box. In the case where MDAC is installed by a utility, such as Microsoft Systems Management Server (SMS), and there is no actual display window, the setup program can stop responding while the installation program waits for the user to click Accept in the dialog box.

As in earlier versions, the MDAC install program can still be expanded with the following command:

"MDAC_TYP /C /T:folder" Once MDAC has been expanded, you can execute the setup program (now Dasetup.exe) by using the /Q switch. In previous versions of MDAC the Setup.exe program could be used to continue the setup process. Although the Setup.exe will still work, Dasetup.exe is recommended as the starting point for MDAC installation.

In earlier versions of MDAC, the /? parameter displays the options available to the setup program. Mdac_typ.exe version 2.5 and later displays the license agreement dialog box when you use the /? parameter, but it installs silently when you use the /Q parameter.