Give a screenshot of network preferences of the Mac that works showing IP address etc.
Also the one connected by wireless.
Then give me a screenshot of the windows laptop that cannot connect. We can work out the issue from there.
You probably have a pure modem.. and are running the AE in bridge instead of router mode. But you have given no info on the rest of the network. What is in front of the AE is more important than what is behind it.
I have the same problem, and i fix it following these instruction:
1) Disconnect the WAN from the AE. Leave only power and one ethernet to
2) Reset the AE
3) Reconfigure a NEW WiFi and save it.
4) Connect all the equipment to the AE
5) Finnally connect the AE to the WAN.
Hope this work for you.
Your ISP is using private IP addresses to save money.. and they are unfortunately using 10.x.x.x address so the AE is failing to connect properly in either bridge or router mode.
The way to fix it is to use the AE in router mode but this will cause a double NAT. You have no choice as your ISP is the cheapskate variety.. if you want to do this correctly you will need to change to a better ISP that is prepared to give you public IP.
First step is to change the IP of the TC LAN side.
Go to the dhcp page and change the first two numbers from 10.0 to 192.168
Then you need to setup the AE in router mode.. ie dhcp and nat on the network page.. and dhcp on the internet page.
Thanks for your help. You say my ISP is not much good, but unfortunatly I don't have much choice.
I have to use Tooway Satelite for my internet as I live in the country. It costs me €54.00 a month, so it doesn't come cheap and I have no other options.
I will try your suggestions and get back to you.
Click ignore... then it will go green..
Satellite ISP always seem to do this.. many wireless 3g/4g also use private IP addresses.
When you pay as much as you do for the service, you have to wonder why they cannot afford to buy a block of IP addresses.. like every other ISP.
Eventually they will provide IPv6 services.. and the issue with IP availability will go away.
In the meantime ring your ISP and ask them how you are supposed to use vpn or other services like BTMM and iCloud that require a public IP.
Some do have public address for the asking if you have reason for it.. !!