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Hi Paul
I can't explain why it suddenly stopped working, but have you allowed sufficient DHCP addresses to permit all your devices to attach? In my case, I have set a limit of 3 for desktop, wife’s desktop and notebook. If you exceed this limit, the Router will not allocate a DHCP IP address to the extra device thus banning it from the network.
Also, have you enabled MAC address filtering, restricting access to only those MAC addresses you entered as permitted in the Router software application? Has a MAC address changed? E.g. new network card.
Can the desktop and laptop communicate over the wired network?
Has the firewall been update automatically from the web and maybe re-set some default setting?
Cheers
Dennis
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