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Losing connection to server?

By rmangus ·
Hi all-

I have a small Windows network set up in my office running Windows 2k3 with a domain. There are 6 workstations, all running Windows XP Pro. We use the server as a file and print server, as well as a DNS server and domain controller.

We're having a problem with our workstations losing their connection to the server after X hours, wherein they have no access to printers or mapped drives. Internet connectivity is still good, but the workstation cannot talk to the server. We've had this problem since we set up the server several months ago, so nothing has changed recently to cause this problem.

I have not been able to get an exact duration as to when the session times out, but I believe it is somewhere around 8 hours. Once connectivity to the server is lost, the user must log out to re-authenticate to the server in order to restore the connection to file and print services.

My question is, do any of you know why this is happening or is there is a switch I need to turn on/off to prevent this from happening? I feel like I've searched everywhere for the answer, including each user profile in the AD and made sure there is no limit to session length. Nothing seems to correct the problem.

Thanks for your help!

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by CG IT In reply to Losing connection to serv ...

One out of many possible solutions is some NICs have power management settings that allow the O/S to turn it off to conserver power after a certain period of being idle. Though this probably is not the cause, its another avenue to check in the process of elimination of the problem.

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by johnnywatt In reply to Losing connection to serv ...

If I were in your situation, I would check two items.
1. Since you're running a DC, then user's are using a domain account. Use AD Users and Computers and verify each account's logon hours. You will find this under Accounts > Logon Hours.
2. Set your DC's Date/time to itself using a logon batch file. Example, net time \\domaincontroller. Then, ensure your clients authenticating to your DC use a batch file to sync time with with the DC. Time is important when using a domain and could have some effects like you're experiencing.

Hope my options help.

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by sean In reply to Losing connection to serv ...

Check the event log of the server security/dhcp might be tripping over itself

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by lmayeda In reply to Losing connection to serv ...

Are the disconnections occuring with all of the the PCs around the same time or for each individual PC after about 8 hours? Could there be a scheduled application on the server that causes it to disconnect users? Otherwise in addition to checking the powersave options on the PCs, do the same on the server.

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by nathan.keever In reply to Losing connection to serv ...

Technically this is not an answer but more of a question. Did this every get resolved? I am having a similar problem. After about 8 hours I lose connection or authentication to my shares on my Win 2003 server. I say authentication because I am able to remote into any of the computers having this problem. I am able to browser the internet and every thing to do with the network card but can not access my shares. When I explore to my shares I get prompted for a username and password. Any ideas? Thanks

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same issue on SBS 2003

by kenlee514 In reply to

I also have this problem on my home network and on a few networks i've setup in the past. I think it's pretty annoying, if anyone knows of a solution, let me know.

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by pmusolf In reply to same issue on SBS 2003

We had the same problem with one of our clients on SBS 2003.
First check the eventlog after a reboot. You will see that the first lines of the eventlog will complain of NOT finding the Domain Controller.
Further on you well see some kerberos errors.
Now you still can logon to the domain use shares etc.. but after aprox. 8 hours you will loose all connection but you are still able to ping the DC.
Resolution: Make sure you have the reverse lookup on your DC setup correctly. Your DC is normaly having DNS running because Active Directory is using it. Make sure you have a PTR record for your DC in the DNS.
Cause: because the XP cannot find the DC during bootup (it does a reverse lookup which means it will translate the name of the DC into a ip adress) the kerberos authentication fails. But in the event log it says it will retry in 480 minutes which is 8 hours.
This solved all my problems.

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by pmusolf In reply to Losing connection to serv ...

We had the same problem with one of our client.
First check the eventlog after a reboot. You will see that the first lines of the eventlog will complain of NOT finding the Domain Controller.
Further on you well see some kerberos errors.
Now you still can logon to the domain use shares etc.. but after aprox. 8 hours you will loose all connection but you are still able to ping the DC.
Resolution: Make sure you have the reverse lookup on your DC setup correctly. Your DC is normaly having DNS running because Active Directory is using it. Make sure you have a PTR record for your DC in the DNS.
Cause: because the XP cannot find the DC during bootup (it does a reverse lookup which means it will translate the name of the DC into a ip adress) the kerberos authentication fails. But in the event log it says it will retry in 480 minutes which is 8 hours.
This solved all my problems.

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Losing connection to server

by peter220nyc In reply to Losing connection to serv ...

I am having the same issue in my office. we have 50 windows XP users connecting to a W2k Domain. users are losing connection to shared drives as well as printer connections all on the same server. I've looked all over the internet for answers with now luck. If anyone can help it would be of great appreciation.

Thanks for you help..

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Same Network Issue

by lesbrooks67 In reply to Losing connection to serv ...

Hello,

Did you every find a solution to this problem? I have a client with the exact problem.

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