SYSTEM.INI Setting Needed for MS-DOS Box in Windows

ID: Q99486

SUMMARY

Sometimes when you are running Windows 3.1 in standard mode on top of LAN Manager and you try to start an MS-DOS box, the screen switches to black, then back to Windows, then displays this dialog box:

The Switch has been Prevented
Cannot Start Application

Exiting Windows and restarting can clear this problem, or you can fix it by finding the NonWindowsApp header of your SYSTEM.INI and inserting the following line:


   TaskSwitchInt6f=OFF

Additional query words: 2.00 2.0 2.10 2.1 2.10a 2.1a 2.20 2.2

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