Intermittent internet connection

Hi Experts,

Few computers on the domain have intermittent internet connectivity.

When there are alot of computers on the network then these computers have no internet connections. As soon only few computers are online then these computers have access again.  Typically early morning and late afternoons these computers have access. Before Xmas these computers were working fine its only this year that this problem has occurred.

When I run the auto network troublshooter in windows I get the following message:

"The device or resource ( is not set up to accept connections on port "The World Wide Web service (HTTP)"

With a yellow exclamation mark on the network icon. We run a win SBS environment, the machines are running windows 7 with the latest update.

I have ran whole bunch of commands on cmd prompt such as:

ip reset
ip release
ip renew
flush dns
winsock reset


And have run antivirus scans multiple times but still no luck.

Any help would be greatly appreciated


Who is Participating?
Steve JenningsConnect With a Mentor IT ManagerCommented:
So . . . sounds like you are running DHCP, are all the machines in the same scope?  . . . and I am guessing that when you can't reach the internet you are attempting to go to a web site using a browser and . . . it fails?

When it fails: from a DOS/CMD window, can you ping the web address? Can you ping / reach the workstation's gateway?

And it's always these same stations? The problem doesn't travel to other stations?

For testing, have you tried giving the workstation a static IP address?

Good luck,
J3D1-KN1G1-1tAuthor Commented:
I have also tried from IE reset.
Have you been able to confirm this is not a LAN issue but purely internet connectivity?
Also, please provide information about any firewall or router your have in place.  
I have seen a similar issue due to insufficient firewall licenses (though not all of a sudden like yours).
J3D1-KN1G1-1tAuthor Commented:
Static IP worked. So im guessing theres an issue with DHCP IP lease

Thank you
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