Command Extensions Cause Access Violation in Cmd.exe

ID: Q157745

The information in this article applies to:

Microsoft Windows NT Workstation version 4.0
Microsoft Windows NT Server version 4.0

SYMPTOMS

When you run CMD or BAT files that use the Windows NT command extension syntax, access violations in Cmd.exe may occur.

For example, create the following Test.cmd file:


   FOR /R C:\ %%f in (iexplore.exe, patchdll.dll, srv.sys) do if exist %%f
   echo %%f

An error message will be displayed:

Application Error: The instruction at "0x77f646ce" referenced memory at "0x0073006f". The memory could not be read.

NOTE: The address values may be different on your system.

Results may vary, depending on what group of files is contained in the set. A Dr. Watson error may be one such occurrence. Usually, there is no error if the set contains only a single file.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem was corrected in the latest Microsoft Windows NT 4.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: 4.00 prodnt cmd command extensions

Keywords : kbenv kbbug4.00 kbfix4.00 kbfix4.00.sp3 NTSrvWkst
Version : 4.0
Platform : winnt
Issue type : kbbug