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"The file is corrupted and cannot be opened" error message when you open an attachment in Office 2010

When you try to open a Microsoft Office email attachment in Microsoft Outlook 2010, Microsoft Office 2010 reports a problem with the file, and the file does not open. 

Error message details

You may receive one of the following error messages:

Microsoft Excel

The file is corrupted and cannot be opened.

Microsoft Word

Word Experienced an error trying to open the file.

Microsoft PowerPoint

PowerPoint found a problem with content in filename. PowerPoint can attempt to repair the presentation.

To fix the "This file is corrupted and cannot be opened" error message, use one of the following methods:

Automatically set component security settings back to the default settings

  1. To fix this problem automatically, click the Fix it button or link in this section.
  2. Click Run in the File Download dialog box, and then follow the steps in the Fix it wizard.

    • This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
    • If you are not on the computer that has the problem, you can save the Fix it file to a flash drive or a CD and then run it on the computer that has the problem.
    • This Fix It works on Windows 7 and earlier operating systems. If you are running Windows 8 or a later operating system, you must use the manual steps in the Let me fix it myself section.

  3. Go to the "Did this fix the problem?" section.

Let me fix it myself

If you want to manually set component security settings back to the default settings, follow these steps:
  1. Click Start, type dcomcnfg in the Search box, and then click dcomcnfg in the Programs list.
  2. In the navigation pane, expand Component Services, expand Computers, right-click My Computer, and then click Properties.

  3. Open the Default Properties tab, and then set the following values:
    • Default Authentication Level: Connect
    • Default Impersonation Level: Identify

  4. Click OK.

Did this fix the problem?

  • If the problem is fixed, you are finished with this section. If the problem is not fixed, please contact support.
  • We would appreciate your feedback. To provide feedback or to report any issues with this solution, please leave a comment on the "Fix it for me" blog or send us an email message.
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Article ID: 2387587 - Last Review: 02/23/2015 16:06:00 - Revision: 11.0

  • Microsoft Excel 2010
  • Microsoft Word 2010
  • Microsoft PowerPoint 2010
  • consumeroff2010track kbmsifixme kbfixme kbsmbportal KB2387587