DOCUMENT:Q172194 09-AUG-2001 [winnt] TITLE :How to Determine If a Program Is 16-Bit or 32-Bit PRODUCT :Microsoft Windows NT PROD/VER:WINDOWS NT:4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation version 4.0 ------------------------------------------------------------------------------- SUMMARY ======= This article describes how to determine whether a program is a 16-bit or 32-bit program. MORE INFORMATION ================ 1. Press CTRL+ALT+DELETE to open the Windows NT Security dialog box. 2. Click Task Manager. 3. Click the Processes tab. 4. On the Options menu, make sure that there is a check mark next to Show 16-Bit Tasks. If there is no check mark, click Show 16-Bit Tasks. 5. All 16-bit tasks are indented under Ntvdm.exe (along with Wowexec.exe). All other tasks or processes are 32-bit. ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search Version : WINDOWS NT:4.0 Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.