RE: Vista clients became unresponsive after network move

After reading the whole thread, here are a couple other ideas to check out.

Verify there's not a speed or duplex mismatch between switch and hosts.
Since you changed the switch, this could be a possible issue.

Check and/or disable the autotuning settings, I have had similar issues with
both Vista and Server 2008 that were resolved by this.

This command will disable autotuning:
netsh interface tcp set global autotuninglevel=disabled

Good luck.

Paul


"Deniz" wrote:

> Hi,
>
> I have been having this weird issue that I cannot isolate and I was
> hoping someone can guess what's going on.
>
> We recently moved our offices to a new location. Half of the computers
> (Vista & XP clients) moved on day one, and worked without the domain
> controller (2003) for a day. On the next day, the rest of the clients
> and the domain controller have been moved to the new location. The
> computers detected a new network, so not everything worked out of the
> box after the move: some firewall and sharing settings were reset
> since they have a new network connection. There were no hardware or
> software changes on the computers (auto-updates were turned off) The
> only difference between the old office network and the new one are the
> cabling in the walls, and the Ethernet switch (old one: Siemens +
> Netgear, new one: Cisco SR224)
>
> Since the move, Vista clients seems to be acting strange in the
> mornings when they were left on overnight:
> - User cannot open any new programs or task manager. Currently open
> programs run OK
> - CTRL+ALT+DEL brings a black screen, and then shows this error:
> "Logon Process has failed to create the security options dialog. "
> with a dialog box "Failure - Security Options"
> - Command prompt can be opened. Some commands work (ipconfig,
> shutdown) some don't (ipconfig /all)
> - I can ping the unresponsive Vista client on the LAN, and I can
> remotely shutdown/restart it although it waits at that black screen
> for few minutes before it starts to shutdown
> - Event logs do not show any specific error before the clients become
> unresponsive
>
> Since I did not change any software/hardware on the machines, I have
> reason to believe that this is a network issue. I searched online for
> the error message I wrote above, but none of them helped so far (and
> only few of them were related to network).
>
> Has anybody had similar issues, or can anybody guess what the issue
> could be?
>
> Our current network:
> ----T1-router-----Linksys-with-DD-WRT------Cisco-SR224-switch-------DC-
> and-clients--
>
> Thank you,
>
> Deniz
> .
>