Article ID: 2588679 - View products that this article applies to.
When you try to open a file in Windows 7, you receive the following error message:
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This issue may occur because the following conditions are true:
To resolve this problem, set the Launching applications and unsafe files setting to at least Prompt. To do this, use one of the following methods:
Method 1: Reset Internet Explorer security zone settings to their default levelTo reset Internet Explorer security zone settings to their default level, follow these steps:
Method 2: Reset Internet Explorer settingsTo learn how to reset Internet Explorer settings, click the following article number to view the article in the Microsoft Knowledge Base:
How to reset Internet Explorer settings
Note The steps in this article may not fully resolve the issue. For example, if the current Internet Explorer settings are being enforced by a Group Policy object (GPO), these steps may not resolve the issue. If you want further assistance in resolving the problem that is described in this article, contact Microsoft Customer Support.
More InformationWhen files are downloaded to a local computer that is running Windows XP Service Pack 2 or a later version, a security zone identifier is stored together with the file properties. This identifier corresponds to the Internet Explorer security zone for where the file was obtained.
When a downloaded file is identified as an unsafe file type, the Launching applications and unsafe files option for the corresponding security zone is queried for one of three options: Enable, Prompt, or Disable. The dialog that is mentioned in the "Symptoms" section will be displayed when the Launching applications and unsafe files option is set to Disabled.
For more information about unsafe file types, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/291369/ )Information about the Unsafe File List in Internet Explorer 6, 7, or 8
925330For more information about the process that is used to apply zone identifiers to files, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/925330/ )An overview of unsafe file types in Microsoft products
883260For more information about the Internet Explorer security zones, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/883260/ )Description of how the Attachment Manager works in Microsoft Windows
(https://support.microsoft.com/kb/174360 / )How to use security zones in Internet Explorer
(https://support.microsoft.com/kb/182569/ )Internet Explorer security zones registry entries for advanced users
Article ID: 2588679 - Last Review: August 15, 2011 - Revision: 10.0