i'm facing a weird problem when writing data to a network share from a Windows Server 2008 R2 computer.
When i write a file (saving a txt with notepad++, updating programs installed on the server remotely, when the system create thumbnails for pdfs, folders) the program writing the data hangs for ~5 seconds (sometimes up to 15 seconds !)
I wasn't able to find what causes this, and i faced the problem with 2 Windows 7 x64 clients (one Ultimate, on Pro).
If one of the Windows 7 client connect to an other Windows 7 clients on administrative shares, in testing purpose, i don't face any of theses hangs.
A little information on my setup :
-The clients all run on Windows 7 SP1 x64
-The server run Windows Server 2008 R2 SP1
-None of the computer is part of a domain
-All the computer are in a homegroup
-All the computer uses a gigabyte realtek network controller (motherboard integrated)
-None of the computers have the same motherboard
-They are all connected with a CAT7 ethernet cable to a Netgear WNDR3700v2
-Net config SERVER state they are all visible, but the Win7Ultimate client
-Net config SERVER autodiconnect is set to -1 on the server and 10 mins on clients
-They all have the PowerShell v3 update
-Power strategy disallow hard drive sleep on server
-All "green" feature of realtek controllers are off
-Network type is set to home on all
-Password protected sharing is active
-All network controller was tested with motherboard's CD drivers, latest drivers from MSI and latest drivers from Realtek website.
-All computers uses Kaspersky Pure (desktop) Small office (Server) and had a test with Kaspersky fully unistalled
-All computers have a fixed MTU of 1472 with autotuning disabled
-To connect to the share, no password is prompted because accounts are "cloned" on all computers (account with the same name, password, rights created manually on each computer)
-Limited users have hangs on folders they have write rights too but don't have explorer hangs when exploring files when thumbnail generation is disabled. They hangs only when saving a file.
-Writing file on the share from the server itself (using RDP or a keyboard plugged to the server) works just fine.
-UAC is disabled on every computers
-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\system\LocalAccountTokenFilterPolicy is set to 1 on each computers
-Checked Auto Detect proxy settings in inetcpl > connections > LAN Settings
-Checked filesystem rights auditing, 0 fails appear on the logs and the succes is reccorded as soon as i hit ctrl+s in any program