Description of the Microsoft Office 2008 for Mac 12.2.1 Update


This article contains information about the Office 2008 for Mac 12.2.1 Update. This update fixes an issue that prevents users from opening some Office documents.

More Information

Improvements that are included in the Office 2008 for Mac 12.2.1 Update

Improvements for all Microsoft Office 2008 for Mac applications

Compatibility is improved. This update fixes an issue that causes Office 2008 for Mac to display an error message that resembles the following:

Microsoft Excel cannot open the file. You may have to download the latest updates for Office for Mac. Do you want to visit the Microsoft Web site for more information?
This issue occurs when you try to open documents that have one of the file types that are listed in the following table:
File formatFile types
Open XML documentsWord Document (.docx), Excel Workbook (.xlsx), PowerPoint Presentation (.pptx), or PowerPoint Show (.ppsx)
Open XML templatesWord Template (.dotx), Excel Template (.xltx), or PowerPoint Template (.potx)
Macro-enabled Open XML documents and templatesWord Macro-Enabled Document (.docm), Word Macro-Enabled Template (.dotm), Excel Macro-Enabled Workbook (.xlsm), Excel Macro-Enabled Template (.xltm), PowerPoint Macro-Enabled Presentation (.pptm), PowerPoint Macro-Enabled Template (.potm), or PowerPoint Macro-Enabled Show (.ppsm)


Before you install the Office 2008 12.2.1 Update, make sure that the computer is running Mac OS X 10.4.9 (Tiger) or a later version of the Mac OS X operating system.

To verify that the computer meets this prerequisite, click About This Mac on the Apple menu.

Additionally, you must install Microsoft Office 2008 for Mac 12.2.0 Update before you install the Office 2008 for Mac 12.2.1 Update.

To verify the update that is installed on your computer, follow these steps:
  1. On the Go menu, click Applications.
  2. Open the Microsoft Office 2008 folder, and then open any Office application (for example, open Word).
  3. On the Word menu, click About Word.
  4. In the About Word dialog box, compare the version number that is next to Latest Installed Update.

How to obtain the update

The following file is available for download from the Microsoft Download Center:

Download Download the Microsoft Office 2008 for Mac 12.2.1 Update package now.

Release Date: August 6, 2009

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Updated files

For a complete list of the files that this update adds or changes, double-click the update installer, and then on the File menu, click Show Files.

Note The Office 2008 12.2.1 Update is also available from Microsoft AutoUpdate. AutoUpdate is a program that automatically keeps Microsoft software up-to-date.

To use AutoUpdate, start a Microsoft Office program. Then, on the Help menu, click Check for Updates.

For more information about resources for Office 2008 for Mac, visit the following Microsoft Web site: