Hyperlinks not working.
 

I must have done something in setup and can't recall how to get back there, but all hyperlinks refuse to open now in the browser?

What system? Distribution and version?
Which browser?

Also, have you tried pinging a site to test that your internet connection is working?

Zorin 17.1, upgraded from 16 initial install. The problem was not there from first using it, but I altered something, maybe in "Linux Help" installed program, but cannot replicate where?

Internet is fine, other access works and internal Firefox links work fine. Brave is the browser I use as default. If I click on a link inside of say Telegram or Thunderbird, nothing happens.

Did you view attached image?

Thunderbird, at least, has a setting to indicate what to do when you click a link. Mine is set to use Firefox.
Not in front of it right now, tho, so I can’t tell you where it is.

What does 'xdg-settigns get default-web-browser' say?

What does 'xdg-settigns get default-web-browser' say?

In Terminal, says "Try: sudo apt install <deb name>

please do not post a single line, but the full message you got.

You either don't have xdg-utils installed which is unlikely or didn't notice that I made a typo - xdg-settings, not xdg-settigns. Sorry about that.

xdg-settings reply.
 

firefox_firefox.desktop

All good now.

deleted old upgraded 16.3 to 17 OS completely (The upgrade was not really helpful?) and re-installed totally from USB to Zorin 17.

Brave accepted as default browser and all hyperlinx working fine.

Grateful for everyone's input help.