Steve
I had this problem and a member of this group helped me solve it. Here's
what he said
--------------------------
This error indicates that you are falling foul of the IRPStackSize bug. The
problem is on the machine you are attempting to connect to, not the machine
where you see the error message. On the computer you are attempting to
connect to, Check the event viewer for an event ID 2011.
Usual fix :
You need to fix a parameter called IRPStackSize
On the computer you are attempting to connect to, Set the IRPStackSize back
to the default (15 ). Perform the following steps:
1. Start the registry editor (e.g., regedit.exe).
2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\lanmanserver\parameters.
3. Double-click IRPStackSize (or if this registry setting doesn't
exist,create it of type DWORD and ensure the case is correct).
4. Change the base to decimal, set the value to 15, and click OK.
5. Reboot the computer. Norton AV is usual suspect for breaking it.
There's a KB article about this, too. Antivirus Software May Cause Event ID
2011 (Q 177078)
http://support.microsoft,com/default.aspx?scid=kb;EN-US;
17707J5
Best Regards, Ron Lowe MS-MVP Windows Networking