Article ID: 922850 - View products that this article applies to.
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Symptoms

A file is blocked when you open or save the file in a Microsoft Office program. In this situation, you may receive an error message that resembles one of the following:
  • You are attempting to open a file that is blocked by your registry policy setting.
  • You are attempting to open a file type <File Type> that has been blocked by your File Block settings in the Trust Center.
  • You are attempting to open a file that was created in an earlier version of Microsoft Office. This file type is blocked from opening in this version by your registry policy setting.
  • You are attempting to save a file that is blocked by your registry policy setting.
  • You are attempting to save a file type <File Type> that has been blocked by your File Block settings in the Trust Center.

Resolution

To resolve this issue, try the following general resolutions to change the File Block settings based on the version of Office that you installed: 

For Office 2013 and Office 2010

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Change the File Block settings to disable the restriction of certain file types:
  1. Click File > Options. If you cannot open a file in Office 2013 or Office 2010, open a blank document to start the Office application. For example, if you cannot open a Word file, open a new document in Word 2013 or Word 2010 to see the option.
  2. In the Application_name Optoins window, click Trust Center > Trust Center Settings.
    Note Application_name should be the Office application (for example, Word, Excel, PowerPoint, or Visio) that has the problem.
  3. In the Trust Center window, click File Block Settings, and then clear the "Open" or "Save" check box for the file type that you want to open or save.
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    FileBlockSettings
  4. Click OK two times.
  5. Try to open or save the file that was blocked again.
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For Office 2007 or Office 2003

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There is no "Trust Center" in Office 2007 or Office 2003. Therefore, you have to change the value of the FileOpenBlock registry subkey to disable the restriction of certain file types.

Important Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.
  1. Exit Office.
  2. Click Start, click Run, type regedit in the Open box, and then click OK.
  3. Locate and then click the following registry subkey:

    For Office 2007:
    HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\Application_name\Security\FileOpenBlock

    For Office 2003:
    HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\11.0\Application_name\Security\FileOpenBlock

    Note Application_name should be the Office application (for example, Word, Excel, Powerpoint, Visio) that has the problem.

    If the FileOpenBlock subkey does not exist, you must create it. To do this, follow these steps:
    1. Select the Security subkey.
    2. On the Edit menu, point to New, and then click Key.
    3. Type FileOpenBlock, and then press ENTER.
  4. After you select the subkey that is specified in step 3, locate the DWORD value.

    Note If this value does not exist, you must create it. To do this, follow these steps:
    1. On the Edit menu, point to New, and then click DWORD Value.
    2. Type the DWORD value for which you want to disable the restriction, and then press ENTER. For example, type BinaryFiles to restrict the opening of .doc and .dot file types of Word or restrict the opening of .xls, .xla, .xlt, .xlm, .xlw, .xlb file types of Excel.
  5. Right-click the DWORD value that you want, and then click Modify.
  6. In the Value data box, type 0, and then click OK.
  7. On the File menu, click Exit to exit Registry Editor.
  8. Try to open or save the file that was blocked again.
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More information

For more application-specific resolution methods that you can try, see the following articles.

Word: I receive an error message when I try to open or save a file in Word
Excel: I receive an error message when I try to open or save a file in Excel
PowerPoint: I receive an error message when I try to open or save a file in PowerPoint
Visio: I receive an error message when I try to open or save a file in Visio

The issue can also occur when you open an embedded or linked Office file in an Office application. For example, you have a Visio object embedded in a Word document. When you try to open the Visio object, you receive a similar error message in Word. To resolve this issue, you must change the File Block settings in the application that owns the blocked file type. In this example, you must change the File Block settings in Visio instead of in Word. If the error message mentions Excel file type, go to Excel to change the File Block settings.

Properties

Article ID: 922850 - Last Review: December 10, 2013 - Revision: 25.0
Applies to
  • Microsoft Visio Professional 2013
  • Microsoft PowerPoint 2013
  • Microsoft Word 2013
  • Microsoft Excel 2013
  • Microsoft Word 2010
  • Microsoft Excel 2010
  • Microsoft PowerPoint 2010
  • Microsoft Office Word 2007
  • Microsoft Visio Standard 2013
  • Microsoft Office Excel 2007
  • Microsoft Office PowerPoint 2007
  • Microsoft Office Word 2003
  • Microsoft Office Excel 2003
  • Microsoft Office PowerPoint 2003
Keywords: 
kbproductlink kbresolve kberrmsg kbsettings kbconversion kbsavefile kbopenfile kbtshoot kbexpertisebeginner kbprb kbsmbportal kbcip KB922850

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