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Microsoft has released security bulletin MS08-055. To view the complete security bulletin, visit one of the following Microsoft Web sites:

How to obtain help and support for this security update

Help installing updates:
Support for Microsoft Update

Security solutions for IT professionals:
TechNet Security Troubleshooting and Support

Help protect your computer that is running Windows from viruses and malware:
Virus Solution and Security Center

Local support according to your country:
International Support

Non-security-related fixes that are included in this security update

This security update fixes the issues that are described in the following articles in the Microsoft Knowledge Base:

948950 Description of the 2007 Office hotfix package: February 26, 2008

950132 Description of the 2007 Office hotfix package: March 12, 2008

953474 Description of the 2007 Office system hotfix package: June 10, 2008

This security update also fixes the following issue that was not previously documented in a Microsoft Knowledge Base article:

You have documents in the Microsoft Office Open XML file format that use versioning and extensibility markup. For example, the documents are created in Word 2010 or Word for Mac 2011. When documents in the Microsoft Office Open XML file format (e.g. DOCX/DOCM files) are edited in Word 2010, Word for Mac 2011, or Word for Mac 2008, and then reopened in Word 2007, spaces are missing between some words in the document. 

This issue may occur when you work with documents that are created in an application such as Microsoft Office 2008 for Mac.

Note: This update cannot fix documents after they are saved with the spaces removed; it only prevents future documents from experiencing the same issue. If a document has been saved in Word 2007 before this update, you will need to manually add the spaces between the affected words in the document.

Update replacement information

This security update replaces the following security update:

934062 Description of the security update for the 2007 Office system: May 8, 2007

File information

The English (United States) version of this security update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

File name

File version

File size








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