Microsoft KB Archive/123254

{|
 * width="100%"|

PRB: Problems Running Multiple HCT Managers

 * }

Q123254

-

The information in this article applies to:


 * Microsoft Win32 Device Driver Kit (DDK) for Windows NT, versions 3.1, 3.5, 3.51
 * Microsoft Windows NT Workstation versions 3.5, 3.51
 * Microsoft Windows NT Server versions 3.5, 3.51

-

SYMPTOMS
If you run multiple copies of the HCT Manager, the HCT test results may be incorrect and the system may fail.

CAUSE
The HCT (Hardware Compatibility Test) is a mechanism used by device driver writers to ensure that their drivers work correctly. The HCT Manager is the program that controls the compatibility tests including starting tests, bypassing tests, and setting various options. Running multiple instances of the HCT Manager at the same time on the same computer is not supported.

STATUS
This behavior is by design. While some of the individual HCT tests are designed to be re-entrant, the HCT Manager itself is not designed to be run in multiple windows. If multiple copies of the HCT Manager are run, the results of the HCT tests are not guaranteed to be accurate and the system may fail.

Additional query words: 3.10 device drivers hardware tests DDK

Keywords :

Issue type :

Technology : kbWinNTsearch kbWinNTWsearch kbWinNT351xsearch kbWinNT350xsearch kbWinNTW350 kbWinNTW350xsearch kbWinNTW351xsearch kbWinNTW351 kbWinNTSsearch kbWinNTS351 kbWinNTS350 kbWinNTS351xsearch kbWinNTS350xsearch kbAudDeveloper kbWinDDKSearch kbWin32sSearch kbWin32DDKSearch kbWin32DDKNT310 kbWin32DDKNT350 kbWin32DDKNT351 kbWin32DDKNTSearch