The following user seemed to have a similar problem in this thread. There are several possible solutions mentioned in this thread
- Do you have a vpn running? If yes try to disable it and run
sudo service network-manager restart
- Do the following to see if it might be a problem with name resolution / DNS:
ping -c4 www.google.com and ping -c4 8.8.8.8 If only the second one works, then its probably due to a DNS problem. Then try to disable automatic DNS and set 8.8.8.8 for google DNS or one of the following for privacy aware DNS
edit1: For future posts try to include much more informations about your system, your problem, the solutions you tried, but didn't work. It doesn't have to be techy, but additional informations maybe even seemingly trivial ones help others to spot the possible root of the problem.
edit2: an other reddit-thread with a similar problem. User Galgaleshs answer:
That icon means that your system cannot correctly contact either your distro's website or the gnome website, depending on which distro
you use. It means "there is some connectivity to the internet but we
can't assure everything will work correctly".
This might be because a firewall is blocking it, because your network
uses a "captive portal" which requires cookies, or you use a weird VPN
that doesn't support the gnome network manager or something else.
Before anyone can diagnose this issue, what is your os , version, the
country you're in and how are you connected to the internet? Is it a
home line, hotel, workplace,..?