File Extension Settings

AdminStudio 2022 | 23.0 | Virtual Package Editor

When you select a file extension in the File Extensions view (for an App-V 5 package) or the Shortcuts view (for an App-V 4.x package), the following settings are available.

File Extension Settings

Setting

Description

Extension

To associate a file extension with the App-V application, enter the extension.

Version:For App-V 5 packages, the file extension that you enter must include a dot—for example, .txt. However, for App-V 4.x packages, the file extension that you enter should not include a dot—for example, txt.

Description

Enter the description text that you want to display for this file extension in the Application Virtualization Client.

MIME

Enter the MIME type that is associated with the file extension.

ProgId

Enter the program identifier—ProgId, also known as application identifier or tag name—that you want to associate with the file extension. A file type’s ProgId is an arbitrary string, but it should be unique on the client system. One ProgId naming convention is to append the word file to your extension without a dot—the .ext extension might use the ProgId extfile. Another convention is to name a file-type ProgId after the application that is used to open the file type, as in SampleApp.Document.

For example, an .xyz file extension could point to an xyzfile ProgId, and all of the .xyz file-type information would be registered under xyzfile.

Icon

Enter the path to the icon file (.ico, .exe, or .dll) that contains the icon resource for the file extension. The location can be in the App-V package, or on your computer or the network. As an alternative to manually entering a value, you can click the Browse This Package button or the Browse Your Computer button to browse to the icon.

If the icon file that you specify contains more than one icon resource, after the icon path, add a comma and then the index number. For example, 0 refers to the first icon in the file, 1 refers to the second icon, and 2 refers to the third icon. To specify the third icon in the icon file, enter the following after the icon file path:

, 2

Perceived Type

Select the appropriate type of file.

File Type Attributes

To set various file type attributes for the file association, select the appropriate option for each of the following settings:

• Open Is Safe—Specify whether the open verb can be used safely for downloaded files that have this file extension.
• Always Unsafe—Specify whether files that have this file extension should be considered to be a possible security risk.
• Always Show Extension—Specify whether you want the file extension to be displayed with the file name, even if the client system is configured to hide extensions for known file types.
• No Recent Documents—Specify whether you want to exclude files with this extension from the Recent Documents folder.

Shell New Enabled

Specify whether you want to include this file type in the submenu that is displayed when end users click New on the context menu in Windows Explorer.

See Also

Configuring File Extension Associations for the Virtual Application

Adding a Verb to a File Extension in a Virtual Package

File Extensions View

Shortcuts View