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Sharing WiFi in previous Windows versions was quite complicated. In Windows 8.1, Microsoft added a new feature that allows you to share WiFi through a mobile broadband Internet connection. For some reason, this doesn’t work for Internet connections other than mobile modems, such as LAN connections or tethered mobile phones.
The procedure described below works for integrated mobile Internet modems and USB modems.
- Press WIN-key + C to open the Charms menu, and then click the Settings charm.
- In the Settings menu, click Change PC Settings.
- In the PC Settings menu, click Network.
- In the Network menu, you should see the mobile broadband modem. A single click opens the settings for the mobile broadband.
- In the mobile broadband settings, simply click Share this connection. Note that if your modem is disconnected from the Internet, Windows will establish the connection.
- Once your mobile device is connected to the Internet, you should see the network name and the network password of your shared WiFi connection. The network name should appear in the list of WiFi networks on the device through which you want connect to the Internet. Don’t confuse it with the access point name. You can change the network name and the network password by clicking Edit.
As mentioned above, you can only share mobile networks with this method. If you click a LAN connection, the “Share this connection” will be missing. The same applies to a mobile Internet connection that you tethered through your phone. Windows 8.1 treats tethered connections like LAN connections. However, a mobile modem connected through a USB port works fine.
“Share this connection” is missing on tethered connection
You can still share Internet through WiFi with any type of Internet connection, by way of the old method, using Internet Connection Sharing (ICS). Note that this method is much more complicated and prone to error than the method described in this post.