Ubuntu 17.04 connected to wifi but can't browse internet

This was Originally posted by Mike_IronFist over here

All you need to do is Open a terminal by pressing Ctrl + Alt + T and run:

gksu gedit /etc/NetworkManager/NetworkManager.conf

At the bottom of this file, copy and paste the following:

[device]
wifi.scan-rand-mac-address=no

Your final results should look something like this:

Then just save and close the file and run:

sudo service network-manager restart

And wifi should work again!

(if above steps doesn't help)

you should also know that Ubuntu 17.04 can not resolve DNS servers with DNSSEC support as of 2017-04-18. Disable DNSSEC with this daemon:

sudo mkdir -p /etc/systemd/resolved.conf.d
printf "[Resolve]\nDNSSEC=no\n" | sudo tee /etc/systemd/resolved.conf.d/no-dnssec.conf

Reconfigure resolvconf if needed:

sudo dpkg-reconfigure resolvconf
# Say yes to "prepare /etc/resolve.conf for dynamic updates?"

And reboot.

I had the same issue here.

I resolved it by adding a DNS server address for the connection.