Microsoft KB Archive/941466

Knowledge Base

Information about the Project 2003 file formats that are blocked after you install Project 2003 Service Pack 3

Article ID: 941466

Article Last Modified on 10/3/2007

---

APPLIES TO

• Microsoft Office 2003 Service Pack 3
• Microsoft Office Project Professional 2003
• Microsoft Office Project Standard 2003

---

Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 How to back up and restore the registry in Windows XP and Windows Vista

INTRODUCTION

This article contains information about some Microsoft Office Project 2003 file formats that are blocked by default after you install Microsoft Office Project 2003 Service Pack 3 (SP3).

MORE INFORMATION

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

By default, the following file formats are blocked in Project 2003 SP3:

• .mpp
  

Note By default, Microsoft Project 98 versions of .mpp files are blocked. However, Microsoft Project 2000 .mpp files, Microsoft Project 2002 .mpp files, and Microsoft Office Project 2003 .mpp files are not blocked.

• .mpx
• .xls
• .txt
• .csv

The message that is displayed when you open a legacy file format depends on the legacy file format security setting. By default, the Do not load file with legacy or non default file formats in Project security option is enabled when you open a legacy file format in Project 2003. Additionally, you receive the following message:

You are trying to open a file saved in an older file format. Your settings do not allow you to open files saved in older file format. To change your setting, navigate to the "Security" tab in the Options dialog box.

If the legacy file format security setting is set to Prompt when loading files with legacy or non default file format, you receive the following message:

You are trying to open a file saved in an older file format. This file may be less secure that a file saved in the new file format. Do you want to continue to open this file?

To enable the opening of files that are saved in previous Microsoft Project file formats, start Project, click Options on the Tools menu, click the Security tab, and then click Macro Security.

Additionally, you can modify the LegacyFiles registry entry to control the opening of these files in Project 2003. To do this, follow these steps:

1. Click Start, click Run, type regedit, and then click OK.
2. Click the following registry subkey:

   HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\MS Project\Security

3. Double-click the LegacyFiles registry entry.
   
   Note By default, this registry entry is not created until you change the setting on the Security tab in the Options dialog box. Or, this registry entry is not created until you create it manually.
4. Type one of the following values, and then click OK:
   • 0
     This is the default value if the LegacyFiles registry entry does not exist. This value corresponds to the Do not load file with legacy or non default file formats in Project option in Project 2003.
   • 1
     This value corresponds to the Prompt when loading files with legacy or non default file format option in Project 2003.
   • 2
     This value corresponds to the Allow loading files with legacy or non default file formats option in Project 2003. This option is the default option in versions of Project 2003 that are earlier than Project 2003 SP3.
5. Exit Registry Editor.

Keywords: kberrmsg kbinfo kbtshoot kbexpertisebeginner KB941466

---

Send feedback to Microsoft

© Microsoft Corporation. All rights reserved.