When you try to save a file in a Microsoft Office PowerPoint format, the file is not saved. Additionally, you receive the following error message: If you receive a similar error message when you try to open a file, see the following Microsoft Knowledge Base article:

This issue may occur if an administrator restricts the types of files that you can save in Microsoft Office PowerPoint 2007 or in Microsoft Office PowerPoint 2003. The administrator can set a registry key to restrict this functionality.

For PowerPoint 2007, the administrator can set the registry key by using the 2007 Microsoft Office system Administrative Templates. For more information, see the "PowerPoint 2007" subsection of the "More Information" section.

For PowerPoint 2003, update 933669 lets the administrator restrict the types of files that you can open or that you can save. For more information, see the "PowerPoint 2003" subsection of the "More Information" section.

To resolve this issue, use one of the following methods:

• Save the file in a different file format.
• Contact the system administrator to change the registry settings.

PowerPoint 2007

The following table contains the DWORD values that the administrator can add to the registry to restrict certain file types by using the FileSaveBlock subkey. Additionally, the following table contains the corresponding file types that are restricted. Notes

• To download the 2007 Office system Administrative Templates, visit the following Microsoft Web site:
  http://www.microsoft.com/downloads/details.aspx?FamilyID=92d8519a-e143-4aee-8f7a-e4bbaeba13e7 (http://www.microsoft.com/downloads/details.aspx?FamilyID=92d8519a-e143-4aee-8f7a-e4bbaeba13e7)
• For more specific information about how to block the ability to save files or to open files in the 2007 Office programs, visit the following Microsoft Web site:
  http://technet.microsoft.com/en-us/library/cc179081.aspx (http://technet.microsoft.com/en-us/library/cc179081.aspx)

PowerPoint 2003

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: The administrator can restrict the types of files that you can open or that you can save in PowerPoint 2003. This functionality was not provided in Office 2003 when Office 2003 was originally released. Update 933669 adds this functionality. For more information about update 933669, click the following article number to view the article in the Microsoft Knowledge Base:
To restrict the types of files that you can open or that you can save in PowerPoint 2003, the administrator can use one of the following methods:

• The administrator can use the updated Office 2003 Administrative Templates to configure the registry on the client computer.
• The administrator can modify the registry by adding a registry key on the client computer. To download the "Office 2003 Service Pack 3 Administrative Template (ADM), OPAs, and Explain Text Update," visit the following Microsoft Web site:
  http://www.microsoft.com/downloads/details.aspx?familyid=BA8BC720-EDC2-479B-B115-5ABB70B3F490&displaylang=en (http://www.microsoft.com/downloads/details.aspx?familyid=BA8BC720-EDC2-479B-B115-5ABB70B3F490&displaylang=en)

The following table contains the DWORD values that an administrator can add to the registry to restrict certain file types by using the FileSaveBlock subkey. Additionally, the following table contains the corresponding file types that are restricted. To enable the FileSaveBlock subkey settings, follow these steps:

1. Exit PowerPoint 2003.
2. Install update 933669 if it is not already installed.
3. Click Start, click Run, type regedit in the Open box, and then click OK.
4. Locate and then click one of the following subkeys:
   HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\PowerPoint\Security\FileSaveBlock
   
   HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\PowerPoint\Security\FileSaveBlock
   If the FileSaveBlock subkey does not exist, follow these steps to create it:
   1. Click the Security subkey.
   2. On the Edit menu, point to New, and then click Key.
   3. Type FileSaveBlock, and then press ENTER.
5. On the Edit menu, point to New, and then click DWORD Value.
6. Type the DWORD value for the file types that you want to restrict, and then press ENTER. For example, type HtmlFiles to restrict the following file types:
   • .mht
   • .mhtml
   • .html
   • .htm
7. Right-click the DWORD value that you typed in step 6, and then click Modify.
8. In the Value data box, type 1, and then click OK.
9. To exit Registry Editor, click Exit on the File menu.

For more information, click the following article number to view the article in the Microsoft Knowledge Base: