Microsoft KB Archive/120055

= OS/2 IOPL Applications May Fail in Windows NT =

Article ID: 120055

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.1
 * Microsoft Windows NT Advanced Server 3.1

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This article was previously published under Q120055



3.10

WINDOWS

kb3rdparty kbbug3.10



SYMPTOMS
An OS/2 application with Ring2 code (an IOPL application) running in Windows NT may hang with the error message:

Error OS/2 error code 8

Note: This is an OS/2 message. Other OS/2 applications may fail to run after a number of Ring2 applications are loaded.



CAUSE
By design, an OS/2 application with Ring2 code and no IN/OUT instructions cannot run on Windows NT. After you run about 90 such applications, no additional OS/2 applications can be run until you stop and restart OS2SRV or reboot your computer.



STATUS
Microsoft has confirmed this to be a problem in Windows NT and Windows NT Advanced Server version 3.1. This problem has been corrected in Windows NT Workstation and Windows NT Server version 3.5.

Additional query words: prodnt 3.10

Keywords: KB120055

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