Q274594: 16-Bit Programs Cannot Open More Than 120 Files Simultaneously in Windows Me

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KB Article Q274594

16-Bit Programs Cannot Open More Than 120 Files Simultaneously in Windows Me
Article ID: Q274594

The information in this article applies to:

- Microsoft Windows Millennium Edition

SYMPTOMS

A 16-bit Windows-based program can open only 120 files simultaneously.

CAUSE

In earlier versions of Windows, 16-bit programs can open more than 120 files simultaneously by using the "FILES= number setting in the Config.sys file (where number can have a maximum value of 255).

These programs do not work properly in Windows Millennium Edition (Me) by using the "FILES=" setting in the Config.sys file. The "FILES=" setting in the Config.sys file is not processed in Windows Me. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

Q269524 Overview of Real Mode Removal from Windows Millennium Edition

Also, the "PerVMFiles" entry in the System.ini file as described in the following Microsoft Knowledge Base article does not apply because this setting is valid only for additional Virtual Machines (VMs), not for the system VM in which 16-bit Windows-based programs are run:

Q269030 How to Increase Available File Handles for MS-DOS-Based Programs in Windows Millennium Edition

RESOLUTION

A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article and should be applied only to systems experiencing this specific problem. This fix may receive additional testing at a later time, to further ensure product quality. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows Me service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, please go to the following address on the World Wide Web:

http://support.microsoft.com/directory/overview.asp

NOTE : In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later:


   Date      Time     Version       Size    File name 
   ---------------------------------------------------
   12/10/00  10:14PM  04.90.00.3001 102,933 Dosmgr.vxd

The Spanish version of this fix should have the following file attributes or later:

   Date      Time     Version       Size    File name 
   ---------------------------------------------------
   20/10/00  07:14AM  04.90.00.3001 102,941 Dosmgr.vxd

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

The new Dosmgr.vxd virtual device driver automatically allocates the maximum number of file handles (255). This mimics the behavior of using the "FILES=255" setting, but only affects 16-bit Windows-based programs.

For additional information about Windows Me hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

Q295413 General Information About Windows Millennium Edition Hotfixes

Published Nov 30 2000 3:15AM
Last Modifed Mar 13 2002 2:01PM
Copyright Microsoft Corporation 2002

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