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I just started working at a Public Library in East Tennessee we are having persistent problems with our public computers losing internet connectivity repeatedly out of the blue. The problem most typically manifests when a customer is browsing any web page they simply become unable to load any new pages. If I open a command line I can ping google (17 or 16ms) no problem but loading any new webpage doesn't work. The only thing we have gotten to work is to simply restart the machines. 99% of the time they'll work again on the first try. But sometimes they'll only work for half an hour before the problem comes back.

release/renewing the IP addresses does not resolve the issue.

All the computers (except the staff machines which have had no issues) are set to recieve their IP addresses automatically (staff machines have defined IP addresses). So I don't think it is an issue with our DHCP settings.

Any ideas?

Thanks Ben

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This sounds like a network configuration error. –  Ramhound Dec 3 '12 at 18:20
3  
Whats the ping count like the to DNS address? Is the network/sys admin using an internal or external dns server? are you using a proxy server? and what web browsers have you tried? Please update your question. –  onxx Dec 3 '12 at 18:26
    
Any proxies in place? when they stat being unable to load new pages, what exactly happens? Any errors reported? When they start failing, can you load "new" sites via their IP address? when they are failing can you contact other machines on the LAN (by name)? Aside form refreshing the IP and restarting, what else have you tried already? –  Ƭᴇcʜιᴇ007 Dec 3 '12 at 18:57
    
IE, Chrome, and Firefox. No proxies in place. No error messages or anything when they stop being able to load pages. Simply just "waiting for...[whatever url]" other computers are the network are still visible as is the network drive. ping for google is 16ms –  user177712 Dec 3 '12 at 19:44
    
pinging google from the command line still works when no other pages will load. existing pages seem to still work. gmail and gchat in particular will still work sometimes even while no other pages will load. –  user177712 Dec 3 '12 at 19:45

1 Answer 1

try this:

ipconfig /release
ipconfig /flushdns
ipconfig /renew

Flushing the DNS may help but it does sound like a DHCP setting issue if it is that widespread.

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Why does it sound like DHCP if the OP can ping Google while the connection is not working properly? –  MaQleod Dec 3 '12 at 18:18
    
Ah... good point... Asker: do they all drop at the same time or do they all drop separately? Could it be an issue with an image used to set these up? (Possibly didn't sysprep to reset Security Identifiers?) –  Wescrock Dec 3 '12 at 18:22
    
No they definitely drop individually. We have about 50 computers in 4 areas and 1 or 2 different computers will be down at a given time and we restart them as fast as possible but they are taking half an hour to shut down. They were stable for the first few months I worked here. We run Envisionware, PCreservation and clean-slate on all the public machines. –  user177712 Dec 3 '12 at 18:48
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What do you mean by 'they are taking 1/2 hour to shut down?' Also, is it the same computers repeating the problem, or is it affecting all the computers, just at different times? –  Wescrock Dec 3 '12 at 18:52
    
it is affecting all the computers at different times. When we restart the computers it will often take half an hour or so for windows to finish shutting down. The boot times are about normal. –  user177712 Dec 3 '12 at 19:33

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