Windows Expand Utility Doesn't Correctly Expand MS-DOS Files (98106)

The information in this article applies to:
    Microsoft MS-DOS operating system 6.0
    Microsoft MS-DOS operating system 6.2
    Microsoft MS-DOS operating system 6.21
    Microsoft MS-DOS operating system 6.22
    Microsoft Windows 3.1
    Microsoft Windows 3.11
    Microsoft Windows for Workgroups 3.1
    Microsoft Windows for Workgroups 3.11

This article was previously published under Q98106


If you expand an MS-DOS program file with the Windows Expand utility, and then execute the file from within Windows, one of the following error messages may be displayed:

This application has violated system integrity due to execution of an invalid instruction and will be terminated. Quit all applications, quit Windows, and then restart your computer.


Insufficient memory to run the application. Quit one or more Windows applications to increase available memory, and try again.
In addition, the icon for a Windows-based MS-DOS 6.0 utility may appear as a generic MS-DOS icon.


The Expand utility included with Microsoft Windows 3.1 or Windows for Workgroups 3.1 does not correctly expand MS-DOS 6.0 files. The Windows Expand utility only copies the files from the MS-DOS 6.0 disk to the target directory; it does not expand them.

NOTE: You may accidentally use the Windows Expand utility if the Windows directory is in the path before the MS-DOS directory.

If a Windows-based MS-DOS utility is still compressed, its icon appears as a generic MS-DOS icon, instead of its usual icon.


To properly expand files from the MS-DOS disks, you must use the MS-DOS Expand utility (EXPAND.EXE), which correctly expands MS-DOS files, as well as Windows 3.1 and Windows for Workgroups 3.1 files.

The MS-DOS 6 Expand utility (EXPAND.EXE) is located on Disk 1 of the 720-kilobyte (K), 1.2-megabyte (MB), and 1.44-MB disk sets and on Disk 3 of the 360K disk set. It can also be found in the MS-DOS directory if you have already installed MS-DOS 6.0 or 6.2.

Modification Type: Major Last Reviewed: 12/3/1999
Keywords: KB98106