said by tschmidt:
When that happens are other devices able to access the Internet? If so it indicate the Internet is up and problem is local. Check the IP stats on one of the device when it is unable to access the Internet. If it is getting a 169.254.x.x IP address it means it tried to get an address from your router but could not. In that case all you need to do is increase the number of DHCP addresses the router is allowed to hand out.
Usually yes, other devices will still be connected to the internet. The issue seem to happen most often on devices which enter and leave the house or on items that are turned off and on. When this issue has happened, the one 'fix' was to turn off the router and turn it back on. This seemed to get the machines that I needed connected at that time to connect (whether all machines would be able to connect, idk).
I will see if I can increase the number of addresses or what I can find in its settings when I get home. But you are saying that most routers can handle many wireless connections without needing anything, correct? I will try to see what a non-connecting device shows for the IP. usually the non-connecting machines just give a message that no internet is available or it cannot connect (even while other machines can).--
Cry "Havoc!" and let slip the dogs of war