You receive an "Another version of this product is installed" error message when you try to help protect or to open an IRM document in an Office 2003 program

When you try to help protect a Microsoft Office 2003 document by using Information Rights Management (IRM) or to open an Office 2003 document that is protected with IRM, you receive the following error message:

This problem may occur when you run Office 2003 on a computer that is running Windows Server 2008.

This problem was first fixed in a hotfix that is now contained in a service pack. If you installed the latest Office 2003 service pack, you do not have to install the hotfix.

Service pack information

This problem is corrected in Office 2003 Service Pack 2.

To resolve this problem, obtain the latest service pack for Office 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

How to obtain the hotfix

This issue is fixed in the Microsoft Office 2003 post-Service Pack 1 Hotfix Package that is dated April 28, 2005. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

Note This hotfix is a download from the Microsoft Download Center. You must install this hotfix on a Windows Server 2008-based computer to help protect an Office 2003 document by using IRM, or to open an Office 2003 document that has been protected with IRM.

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

This problem was first corrected in Office 2003 Service Pack 2.