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"Unexpected Error 21" when starting a 32Bit program

Posted on 1997-12-11
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Last Modified: 2013-12-29
When I started a program in Win3.11 it said, that I need Win32s on my computer. I installed Win32s on my PC but when I tried to start it, Windows return "unexpected error 21"
What can I do?
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Question by:Richie121197
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by:Richie121197
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Adjusted points to 150
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by:Daniel Van Der Werken
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Is this it?

Unexpected DOS Error 21 can occur when you try to run Math CAD for Windows, version 4.0. To resolve this problem, obtain Math CAD's Fax #2000.
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by:Richie121197
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I do not use MathCAD for Windows.
My problem is that I get the error with every Win32s program.


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by:Bing CISM / CISSP
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I think you may have MSVCRT20.DLL in your system directory, maybe some programs need this runtime file.

But, this version of MSVCRT20.DLL is not compatible with Win32s. So, that happens.

Hope this helps.

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by:Richie121197
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Can you tell me, where I get a new version of this MSVCRT20.DLL file?

Or are there some other .DLL files that could help me?


Anyway, thanks...
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Bing CISM / CISSP earned 150 total points
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Have you made sure that msvcrt20.dll is on you hard disk?

As for replacing it with a new one, the Win32s version of MSVCRT20.DLL is located in the WIN32S\REDIST
directory of the Visual C++ version 2.0 CD-ROM.

In fact, you may find it from many of M$ applications CD-ROM, for example, it stays on Office 95/97, FoxPro, Access ...

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Author Comment

by:Richie121197
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You were completly right. I was able to get the file and now all my programs are running on my computer.

Thank you very much!!!
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by:Bing CISM / CISSP
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:-) Glad to hear this.
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