Device doesn't connect to Wi−Fi (Mac OS)

Maybe the network you are trying to connect to is hidden. If this is the case, you need to connect to it manually.

1. Click the Wi-Fi icon in the upper right-hand corner of the screen and select Join Other Network...
2. Enter the network name, select the security type, enter the password and click on Join.

Watch this video tutorial on how to connect to hidden Wi-Fi networks:

Note: The most common security type of today is WPA 2 - Personal (also known as WPA 2 - PSK). You can also check the check box next to Remember this network, so that you can easily reconnect to this Wi-Fi network in future.

Consider this as an option, especially if you reset your router and entered the same wireless network name (and password), but, before that, you were able to connect to that Wi-Fi network. You need to remove the Wi-Fi network from your computer's saved Wi-Fi passwords list, i.e. "forget" the network, and reconnect to it.

To "forget" the network, follow the steps below:

1. Open Network Preferences at the bottom of the drop down menu;
2. Click on Wi-Fi (located on the left side) and click Advanced (located at the bottom right of the pop-up window);
3. Select the Wi-Fi network you want to "forget", click the minus sign and click OK;

Reconnect to the Wi-Fi network by entering the username and password.