On the server:

REGEDIT4
; NTServer.REG    Created & maintained by Nick Ramsay (http://
www.witzendcs.co.uk/html/contact_us.html)
;
Available from: http://www.witzendcs.co.uk/html/nt_networking.html
;
Last edit:      08 March 2007 23:21
;
This file will alter the behaviour of the network redirector on

; Windows NT, 2000/2003 & XP servers & workstations acting as servers

; ##NEW## - Additional setting for Vista when acting as a server in a
peer-to-peer environment

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer
\Parameters]

; Prevent premature workstation disconnection - default is 0000000f
(15 minutes)

"autodisconnect" = dword:ffffffff

; This one is for Server 2003 - default is 2 minutes!
"ConnectionNoSessionsTimeout" = dword:ffffffff

; This one disables the SMB2 protocol in Vista which causes major file-
sharing problems

; this is taken from http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1259708&SiteID=1

"SMB2" = dword:00000000

; Forces the server to really close a file when instructed

"CachedOpenLimit" = dword:00000000

; The following 2 entries force oplocks off

"EnableOpLockForceClose" = dword:00000001

"EnableOpLocks"          = dword:00000000

; The following 2 entries force the server to immediately report a
sharing violation

; Although this looks wrong, it is actually the best option for
Clipper

"SharingViolationDelay"  = dword:00000000

"SharingViolationRetries" = dword:00000000

; This one is for Win2K and later

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MRXSmb
\Parameters]

"OplocksDisabled" = dword:00000001

On the workstation:

REGEDIT4
; NTWrkStn.REG    Created & maintained by Nick Ramsay (http://
www.witzendcs.co.uk/html/contact_us.html)
; Available from: http://www.witzendcs.co.uk/html/nt_networking.html
; Last edit:      18 October 2006 22:45
;
; Modification history
;  18/10/2006 22:45        Jean Mathieu of Outillage Placide Mathieu inc
spotted an extra 'd' on the end of
;                        "EnableOpLockForceClose" - Now fixed.
;
;
; This file will alter the behaviour of the network redirector on
; Windows NT, 2000 & XP workstations

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation
\Parameters]

; Disable oplocks

"UseOpportunisticLocking" = dword:00000000

"EnableOpLocks"           = dword:00000000

"EnableOpLockForceClose"  = dword:00000001

; Disable file caching - effectively forces a commit back to the
server

"UtilizeNtCaching" = dword:00000000

; Unlocks data immediately in response to an unlock request (improves
performance on W2K)

"UseUnlockBehind"  = dword:00000001

; Allows data to be read even if another station has a lock in place -
can prevent "deadly embrace"

"UseLockReadUnlock" = dword:00000000

; This one appears to be present in W2K onwards, although by default
it isn't
; actually in the registry.
We'll add it & explicitly disable the workstation asking for oplock
support

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MRXSmb
\Parameters]