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:
The file is corrupted and cannot be opened.
Word Experienced an error trying to open the file.
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, set component security settings back to the default settings. To have us fix this problem for you, go to the "Here's an easy fix" section. If you prefer to fix this problem manually, go to the "Let me fix it myself" section.
Here's an easy fix
To fix this problem automatically, click the Download button. In the File Download dialog box, click Run or Open, and then follow the steps in the easy fix wizard.
This wizard may be in English only. However, the automatic fix also works for other language versions of Windows.
If you’re not on the computer that has the problem, save the easy fix solution to a flash drive or a CD, and then run it on the computer that has the problem.
Let me fix it myself
Easy fix 50784
If you want to manually set component security settings back to the default settings, follow these steps:
Click Start, type dcomcnfg in the Search box, and then click dcomcnfg in the Programs list.
In the navigation pane, expand Component Services, expand Computers, right-click My Computer, and then click Properties.
Open the Default Properties tab, and then set the following values: