Neil:

Hmmmm ... DNS requests ... wouldn't have even gone there.
My DNS sevre is also my DOMAIN/FILE/ACTIVE DIRECTORY server ... all in one high powered machine. Bad? Could this becausing the timed shut down?

Mal

>Hi,
>Also check the CMOS in the machines for any power related settings.
>Also I am assuming that you have power filtering on all machines and the switch, and there is no electrically induced injection into the LAN cabling or faulty cabling.
>Could the switch be experiencing a load related buffer overflow, swap it out and see what happens.
>
>IMPORTANT:-What device is servicing the DNS & DHCP requests. If it is the gateway router, it is the easiest way of shooting yourself in the foot. i.e. gives very erratic behaviour.
>
>>Neil:
>>
>>Yes, I had already tried hibernating and the power settings. I turned everything off.
>>Now, WOL, that's something I didn't know about and sounds very much like what's happening.
>>I'll look into it and let you know what of the result.
>>
>>Mal
>>
>>>Hi,
>>>Some things to check on the workstations and server.
>>>1. Check the power settings in screen properties, may be hibernating.
>>>2. Some NIC's have power saving functions, check the properties in Control panel/Networking and check the adaptor settings.
>>>3. Also check WOL settings (Wake on LAN), may be going to sleep.
>>>
>>>>Neil:
>>>>
>>>>Thanks for not giving up.
>>>>
>>>>No, no COM or KeepAlive.
>>>>
>>>>I did check the server event log and found the following:
>>>>
>>>>o WinHTTP Web Proxy Auto-Discovery Service has been idle for 15 minutes, it will shut down.
>>>>o WinHTTP Web Proxy Auto-Discovery Service suspended operation.
>>>>o WinHTTP Web Proxy Auto-Discovery Service enter the stop state.
>>>>
>>>>These entries are about the time the workstations went down.
>>>>
>>>>Not sure what WinHTTP Web Proxy Auto-Discovery Service is but will look it up.
>>>>In the mean time, do you have any ideas on this?
>>>>
>>>>TIA
>>>>
>>>>
>>>>
>>>>>Hi,
>>>>>Are you using COM ? KeepAlive ?
>>>>>
>>>>>Are there any entries in the Event logs of the Server or Workstations.
>>>>>
>>>>>>Hi Neil:
>>>>>>
>>>>>>Thanks for you reply.
>>>>>>I tried diabling autodisconnect (ran the command and it said "done").
>>>>>>
>>>>>>It still happened all the workstations, except 5, got disconnected from the network at once.
>>>>>>5 stayed connected. Strange ...?
>>>>>>
>>>>>>Thanks for your time though :o)
>>>>>>
>>>>>>Mal
>>>>>>
>>>>>>>Hi,
>>>>>>>Disable autodisconnect http://support.microsoft.com/default.aspx?scid=kb;en-us;297684&Product=win2000
>>>>>>>
>>>>>>>>HI:
>>>>>>>>
>>>>>>>>I have 20 workstations connected to my Windows Server 2003 server.
>>>>>>>>
>>>>>>>>If I leave a workstation connected buy idle for ... 1 hour, the workstation geta disconnected from the network. I would have to reboot the workstation in order to use the workstation on the LAN.
>>>>>>>>
>>>>>>>>The other problem I'm having is: At about 11:00 PM every night, all of the workstations gets cut off from the network. Again, I'd have to reboot all of the workstations to connect into the LAN.
>>>>>>>>
>>>>>>>>I do not have any restrcitions as "hours of use" on any of the workstations.
>>>>>>>>
>>>>>>>>I there some where in Server 2003 that I can check to see if the server is logging any of the workstations off?
>>>>>>>>
>>>>>>>>TIA
>>>>>>>>
>>>>>>>>Mal