slow network connection between Win7 and one Win 2003 R2

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on our company have

* 2 (physical) machines running win server 2003 r2 x64

* 3 virtual machines running win server 2003 r2 x64

* 10+ clients (desktops & notebooks) running windows xp

* 10+ desktops running windows xp x64

all machines belong same domain.

everything ran fine, until added windows 7 x64 notebook (toshiba tecra  a11) domain.

 

all existing machines still have no problem whatsoever, new windows 7 x64 notebook slow when connecting 1 particular server (domain member server, not dc), either via \\server\share, via mapped drive (t:\ = \\server\share), or \\192.168.5.196\share

typically, takes 10 seconds before contents of share appear, 10 more when opening directory, 10 more next level etc...

said notebook not have problem when connecting of other servers or clients.

make no difference whether laptop uses lan (intel) or wlan (atheros)

 

we have 2 more identical notebooks. did few more tests:

notebook2 => installed dual boot system windows xp x64 , windows 7 x64 (both added domain member) :

* when booting in windows xp x64 notebook has no problem connecting problem server.

* when booting windows 7 x64 notebook slow first notebook -- when connecting our problem server,  not when connecting other machine.

 

notebook 3 -> windows 7 x64 installation only, , not added domain

* notebook has no problem connecting our problem server

notebook 3 -> added domain

* notebook slow other 2 when connecting problem server

it not make difference if log in local user, domain user or domain admin, connection server , remains slow.

notebook 3 -> removed form domain

* notebook remains slow when connecting 1 server.

 

so:

it seem problem occurs on windows 7 machines, , when domain members, , when connecting 1 particular server.

 

it looks happens when adding win7 client domain kills off network connections our problem server, , doesn't reversed when removing client domain.

 

the client hardware ok, works fine when running win xp x64 or when running non-domain windows7.

 

before installed 2nd , 3rd notebook , hence found out thing domain membership, tried few other things without success:

* other network cables, other switch

* updated lan driver & wlan driver on notebook

* updated lan driver on server

* dhcp instead of fixed ip on server

* disabled firewall , antivirus software on client , server

 

so far, seems domain membership upsetting windows 7 machines' network connection 'server', idea can try more or how can fix it?

 

thanks!

j.


1.try disabling autotuning on windows 7(you should run command in run administrator mode)

netsh interface tcp set global autotuning=disabled

2.try disabling ipv6 win7.

open regedit.exe go hklm>system>current control set>services>tcpip6>parameters create new dword32 value "disabledcomponents" enter value ffffffff

darshana jayathilake


Windows Server  >  Platform Networking



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