Error message when you try to install the Access 2007 Runtime: "Access 2007 Runtime: Another version of this product is already installed"

When you try to install the Microsoft Office Access 2007 Runtime, you receive an error message. If you try to install the updated version of the Access 2007 Runtime version 2, you receive the following error message:Note The updated version of the Access 2007 Runtime version 2 was released on March 28, 2008.

If you try to install the 2007 Microsoft Office suite Service Pack 1 (SP1) and no other products from the 2007 Microsoft Office system, you receive the following error message:

This problem may occur because you already have a previous installation of the Access 2007 Runtime installed on the computer. To determine whether you have an earlier version of the Access 2007 Runtime, see the "More information" section.

If you have the release version of the Access 2007 Runtime installed and you want to update to the current release, you must remove the existing installation of the Access 2007 Runtime. Then, install the Access 2007 SP1 Runtime. To remove the release version of the Access 2007 Runtime from the computer, and then install the Access 2007 SP1 Runtime, follow these steps:

1. Click Start, and then click Control Panel.
2. Click Add or Remove Programs.
3. In the Currently installed programs list, click Microsoft Office Access Runtime (English) 2007, and then click Remove.
4. When you are prompted to remove the Access 2007 Runtime from the computer, click Yes.
5. Visit the following Microsoft Web site:
   http://www.microsoft.com/downloads/details.aspx?FamilyID=d9ae78d9-9dc6-4b38-9fa6-2c745a175aed&DisplayLang=en (http://www.microsoft.com/downloads/details.aspx?FamilyID=d9ae78d9-9dc6-4b38-9fa6-2c745a175aed&DisplayLang=en)
6. Click Download, and then save the file to the hard disk drive.
7. Double-click the AccessRuntime.exe file on the hard disk drive to start the Setup program.
8. Follow the instructions to complete the installation.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

There is no update package that is intended to upgrade the original release of the Access 2007 Runtime to the Access 2007 SP1 Runtime. The updated version of the Access 2007 Runtime is designed only for new installations of the Access 2007 SP1 Runtime. The 2007 Microsoft Office suite SP1, such as the Access 2007 SP1 Runtime update, was not designed to be an update for existing installations of the Access 2007 Runtime.

How to determine which version of the Access 2007 Runtime is installed

To determine which version of the Access 2007 Runtime is installed, follow these steps:

Note Because there are several versions of Windows, the following steps may be different on the computer. If the steps are different, see your product documentation to complete these steps.

1. Click Start, and then click Search.
2. Under Search Companion in the search results pane, click All files and folders.
3. In the All or part of the file name box, type Msaccess.exe, and then click Search.
4. In the list of files, right-click Msaccess.exe, and then click Properties.
5. Click the Version tab.

The following table lists the version information for the Access 2007 Runtime and for the Access 2007 SP1 Runtime.

For more information, click the following article number to view the article in the Microsoft Knowledge Base: For a list of the Access 2007 Runtime-specific issues that are fixed by the Access 2007 SP1 Runtime, visit the following Microsoft Web site: