system32 folder

[Guest]

error message is
16-bit MS-DOS Subsystem
path to the program you are trying to run
C:\WINNT\system32\autoexec.nt The system file is not suitable for running
MS-DOS and Microsoft Windows applications. Choose 'Close' to terminate the
application.

when I run start > run> cmd I get the same message how do I get into the
C:/windows/system32 folder to add this to the file?

Thanks

 

[philo]

error message is
16-bit MS-DOS Subsystem
path to the program you are trying to run
C:\WINNT\system32\autoexec.nt The system file is not suitable for running
MS-DOS and Microsoft Windows applications. Choose 'Close' to terminate the
application.

when I run start > run> cmd I get the same message how do I get into the
C:/windows/system32 folder to add this to the file?

Thanks

you should have a backup autoexec.nt file in your C:\WINNT\repair folder

just copy it over to the system32 folder



if for any reason you don't have the file at all
just create a new file using word pad and save it in your system32 folder
(and name it autoexec.nt)

cut and paste the following


@echo off

REM AUTOEXEC.BAT is not used to initialize the MS-DOS environment.

REM AUTOEXEC.NT is used to initialize the MS-DOS environment unless a

REM different startup file is specified in an application's PIF.

REM Install CD ROM extensions

lh %SystemRoot%\system32\mscdexnt.exe

REM Install network redirector (load before dosx.exe)

lh %SystemRoot%\system32\redir

REM Install DPMI support

lh %SystemRoot%\system32\dosx

 

[Wesley Vogel]

autoexec.nt and 16-bit MS-DOS Subsystem have *NOTHING* to do with cmd.exe.

autoexec.nt can be totally missing and cmd.exe will still run.

Chances are that when you type: cmd in the run command cmd.com tries to open
instead of cmd.exe.

You have a trojan/virus/worm. cmd.com is *NOT* an XP file.

cmd.exe and command.com are legitimate Windows XP files.

You have a trojan/virus/worm. cmd.exe is not part of the 16 bit MS-DOS
Subsystem. autoexec.nt and config.nt have nothing to do with cmd.exe.

When you type cmd in the Start | Run box, XP finds cmd.com instead of
cmd.exe. When a command is typed without an extension, XP looks for the
..com extension first before it looks for the .exe extension, if it finds
cmd.com, it will not even look for cmd.exe. Because XP finds cmd.com XP
thinks that it needs autoexec.nt and config.nt to run cmd.com.

cmd.com is *NOT* an XP file, it's added by a trojan/worm/virus.

If you were to type cmd.exe in the Start | Run box, cmd.exe might open if
the trojan/worm/virus hasn't rendered it useless.

UPDATE your antivirus software and run a complete scan.

UPDATE whatever anti-spyware applications that you have and run a full
system scan with each one.

Also Known As: W32.Alcan.A, Win32.Alcan.A [Computer Associates],
P2P-Worm.Win32.Alcan.a [Kaspersky Lab], W32/Alcan.worm!p2p [McAfee],
W32/Alcra-A [Sophos], WORM_ALCAN.A [Trend Micro]

[[This worm drops the legitimate file compression DLL, BSZIP.DLL in the
Windows system folder. It does this so it can compress itself. It also drops
the following files in the Windows system folder:

CMD.COM
NETSTAT.COM
PING.COM
REGEDIT.COM
TASKKILL.COM
TASKLIST.COM
TRACERT.COM

These files contain the string MZ so that this worm can disable the
following Windows tool applications:

CMD.EXE
NETSTAT.EXE
PING.EXE
REGEDIT.EXE
TASKKILL.EXE
TASKLIST.EXE
TRACERT.EXE ]]
From...
WORM_ALCAN.A - Technical details
http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_ALCAN.A&VSect=T

Symantec Security Response - W32.Alcra.A
http://securityresponse.symantec.com/avcenter/venc/data/w32.alcra.a.html





--
Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In