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DOS/16M FAQ:
Error Conditions


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  1. One of my customers is getting the message 'Extended error 4' while running our application built with DOS/16M, and then the application hangs. Does 'Extended error' refer to the DOS extender? Is this a DOS/16M error?

1. One of my customers is getting the message 'Extended error 4' while running our application built with DOS/16M, and then the application hangs. Does 'Extended error' refer to the DOS extender? Is this a DOS/16M error?

No. It't not even a DOS/16M error message.

Extended errors are DOS errors usually displayed when command.com cannot be read. Error number 4 is caused by too many open files. Refer to a DOS manual for more information.


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Last modified 2003.02.07. Your questions, comments, and feedback are welcome.