خطا در اجرای xp_cmdshell

[behrouzmoslem]

Msq 15121, Level 16, State 21,State 21, procedure Xp_cmdshell,Line1 as error occured during the
execution of xp_cmd shell. A call to'CreateProcess' failed with error code:'2 '.
این خطا چیست و چگونه برطرف می شود

اطلاعات کمکى
os: server 2003 on esxi
DB:sql server 2008 r2
connection: Remotly

commend:
exec sp_configure 'show advanced option',1
reconfigure
exec sp_configure 'Xp_cmdshell',1
reconfigure
exec [sys].[xp_cmdsell] 'ping 127.1.1.1'

permission in sql :sa
permission in os : administrator local

network:workgroup