

You can also try to delete one of the preferences (.plist), which is related to connectivity issues. The last to end up the process hit the “Apply” button.Then type 1453 on the tab under the “MTU” and click “OK” Select Custom on the drop-down menu next to “MTU”.

Click on the “Hardware” tab > hit the tab next to the “Configure” menu and you will find a drop-down menu.Click the (+) sign under the “DNS Servers” tab to add a new DNS Server.Click on the “Advanced” button > Click on TCP/IP tab > find and click Renew DHCP Lease button.You need to insert the password of your router.It’s time to join the WiFi network that you can find beside the “Network Name”.Click on “Location” column > choose “Edit Location” > click the (+) sign to create the new location > type a name for the new network, then click “Done”.Click on the Apple menu on the top-right corner of your Mac.First of all, quit all the apps on your Mac that are running on WiFi, such as Safari, Mail, Chrome, etc.Creating a new network with custom DNS settings can help you to get rid of the issue: Some Mac users reported this issue after they installed the OS X update. This solution is for those who have Mac WiFi problems on OS X El Capitan. Solution No.10: Create a new network location with custom DNS You also need to ensure that there’s no protocol chosen. Then, click the option Advanced > Proxies tab.

Make sure you have unchecked all the Proxies Settings by opening the System Preferences > Network.

