Error when you try to open a file from a shared folder on the host operating system in Virtual PC 2004: "File not found"

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You try to use a 16-bit application that is running on a Microsoft Virtual PC 2004 guest operating system to open a file. This file is in a shared folder on the host operating system. You find that the file may not open. When this behavior occurs, you may receive one of the following error messages:
File not found
The directory could not be opened.
This behavior occurs because the functionality that is used to share folders in Virtual Machine Additions uses the wrong short file name. The 16-bit applications use the short file name to open the file. These 16-bit applications are sometimes referred to as "legacy applications."
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.The 5.3 version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Date         Time         Size        File name                   -----------------------------------------------------------------26-Jan-2006  10:18        13,338,112  Vpc2004qfe891068_msdn.msp   26-Jan-2006  10:19        14,603,264  Vpc2004qfe891068_update.msp                                           
This problem only occurs when the functionality to share folders that is included in Virtual Machine Additions is used to share the folder on the host operating system. To avoid this problem, use the net share command to share the folder on the host operating system. To do this, follow these steps:
  1. Install an internal or an external network in the virtual machine configuration.
  2. On the host computer, share the folder that you want to access from the network.
  3. In the guest operating system, click Start, click Run, and then type the following:
    net use driveletter: \\host-name\share-name
  4. Click OK.
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the "Applies to" section.
More information
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 891068 - Last Review: 01/15/2015 08:09:05 - Revision: 3.0

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