Schedule Task - Windows 2008 R2 - User Session

Question

I am migratiing the schedule task from windows 2003 to windows 2008 and find some of behaviour change on handling user session by Task Scheduler.
I have a simple batch to call "net use" command to map a network drive for copying file to remote server. And I have scheduled 3 similar tasks and run as same user (e.g. testuser)
In windows 2003 enviornment, the mapped network drive resource will not be accessed by another schedule task. In windows 2008 R2, howerver, the network drive mapped in one of schedule task can be reached by another task. Does anyone have
idea on this behaviour change?
Here are the testing script
Test Script 1
NET USE >> D:\TEST1.LOG
NET USE Z: \\127.0.0.1\Share /PERSISTENT:NO >> D:\TEST1.LOG
ping 127.0.0.1 -n 100
NET USE Z: /DELETE
Test Script 2
NET USE >> D:\TEST2.LOG
NET USE Z: \\127.0.0.1\Share /PERSISTENT:NO >> D:\TEST1.LOG
ping 127.0.0.1 -n 100
NET USE Z: /DELETE
Test Script 3
NET USE >> D:\TEST3.LOG
NET USE Z: \\127.0.0.1\Share /PERSISTENT:NO >> D:\TEST3.LOG
ping 127.0.0.1 -n 100
NET USE Z: /DELETE
Output in Windows 2003
Test1.LOG
New connections will not be remembered.
There are no entries in the list.
The command completed successfully.
z: was deleted successfully.
Test2.LOG
New connections will not be remembered.
There are no entries in the list.
The command completed successfully.
z: was deleted successfully.
Test3.LOG
New connections will not be remembered.
There are no entries in the list.
The command completed successfully.
z: was deleted successfully.
Output in Windows 2008
Test1.LOG
New connections will not be remembered.
There are no entries in the list.
The command completed successfully.
z: was deleted successfully.
Test2.LOG
New connections will not be remembered.
Status       Local     Remote                    Network
OK           Z:       
\\127.0.0.1\Share          Microsoft Windows Network
The command completed successfully.
System error 85 has occurred.
The local device name is already in use.
The network connection could not be found.
More help is available by typing NET HELPMSG 2250.
Test3.LOG
New connections will not be remembered.
Status       Local     Remote                    Network
OK           Z:       
\\127.0.0.1\Share          Microsoft Windows Network
The command completed successfully.
System error 85 has occurred.
The local device name is already in use.
The network connection could not be found.
More help is available by typing NET HELPMSG 2250.

Answer 1

Sorry for confusing, I have udpated the script for this testing
=====================================================
Script for Schedule Task 1 - to map a network drive and issue a ping command to "sleep"
Echo %date% %time% list drive on schedule task 1
NET USE 
Echo %date% %time% map drive on schedule task 1
NET USE Z: \\127.0.0.1\Share /PERSISTENT:NO
ping 127.0.0.1 -n 100 > NUL
Echo %date% %time% remove drive on schedule task 1
NET USE Z: /DELETE
Script for Schedule Task 2 - to list out any network drive are mapped.
Echo %date% %time% list drive on schedule task 2
NET USE 
========================================================================
The schedule task 2 are triggered while the schedule task 1 are running, In the windows 2003, the schedule task 2 could not list out any mapped drive. In the windows 2008, however, the schedule task 2
can list the network drive mapped by schedule task 1. The question is if there are any changes between windows 2003 and 2008, hope it can clarify.
Ouput on windows 2003
Schedule task1
D:\>Echo Wed 02/06/2013 18:31:52.93 list drive on schedule task 1
Wed 02/06/2013 18:31:52.93 list drive on schedule task 1
D:\>NET USE
New connections will not be remembered.
There are no entries in the list.
D:\>Echo Wed 02/06/2013 18:31:52.98 map drive on schedule task 1
Wed 02/06/2013 18:31:52.98 map drive on schedule task 1
D:\>NET USE Z: \\127.0.0.1\Share /PERSISTENT:NO
The command completed successfully.
D:\>ping 127.0.0.1 -n 100 1>NUL
D:\>Echo Wed 02/06/2013 18:33:32.07 remove drive on schedule task 1
Wed 02/06/2013 18:33:32.07 remove drive on schedule task 1
D:\>NET USE Z: /DELETE
Z: was deleted successfully.
Schedule Task 2
d:\>Echo Wed 02/06/2013 18:32:22.54 list drive on schedule task 2
Wed 02/06/2013 18:32:22.54 list drive on schedule task 2
d:\>NET USE
New connections will not be remembered.
There are no entries in the list.
Output on windows 2008
 Schedule task1
C:\Windows\system32>Echo Wed 02/06/2013 18:17:52.13 list drive on schedule task 1
Wed 02/06/2013 18:17:52.13 list drive on schedule task 1
C:\Windows\system32>NET USE  
New connections will not be remembered.
There are no entries in the list.
C:\Windows\system32>Echo Wed 02/06/2013 18:17:52.16 map drive on schedule task 1
Wed 02/06/2013 18:17:52.16 map drive on schedule task 1
C:\Windows\system32>NET USE Z: \\127.0.0.1\Share /PERSISTENT:NO 
The command completed successfully.
C:\Windows\system32>ping 127.0.0.1 -n 100 
1>NUL
C:\Windows\system32>Echo Wed 02/06/2013 18:19:32.59 remove drive on schedule task 1
Wed 02/06/2013 18:19:32.59 remove drive on schedule task 1
C:\Windows\system32>NET USE Z: /DELETE
Z: was deleted successfully.
Schedule task2
C:\Windows\system32>Echo Wed 02/06/2013 18:18:07.69 list drive on schedule task 2
Wed 02/06/2013 18:18:07.69 list drive on schedule task 2
C:\Windows\system32>NET USE  
New connections will not be remembered.
Status       Local     Remote                    Network
OK           Z:        \\127.0.0.1\Share        
Microsoft Windows Network
The command completed successfully.