Knowledge Base

XCOPY Date Switch Fails on 29th in Leap Year

Article ID: 152349

Article Last Modified on 11/1/2006

Microsoft Windows NT Advanced Server 3.1
Microsoft Windows NT Workstation 3.1
Microsoft Windows NT Advanced Server 3.1
Microsoft Windows NT Workstation 3.5
Microsoft Windows NT Workstation 3.51
Microsoft Windows NT Server 3.5
Microsoft Windows NT Server 3.51

This article was previously published under Q152349

SYMPTOMS

If you specify a date of the 29th of any month in a leap year (using the /D:mm-29-yy switch), the XCOPY command fails with an incorrect parameter error.

WORKAROUND

To work around this problem, use one of the following methods:

Copy Xcopy32.exe from a Windows 95 computer and use it on your Windows NT computer instead of xcopy.exe. -or-
Upgrade to Windows NT version 4.0

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem has been corrected in Windows NT 4.0.

Additional query words: XCOPY Date leap year 3.10 3.31 95

Keywords: KB152349