Steam is one of the biggest services platforms used by players to download games, and it is quite frustrating if you are not able to play your favorite titles from it because of some errors. Some of these errors will not let you download, play, or update any games, and one of these is the "Steam no internet connection error."
If you are getting this annoying message in Steam, the issue might be on your side, or the Steam servers might not be working properly. You can find out if the Steam is down below.
Is Steam Down: Steam No Internet Connection Error Fix
Update March 16: Steam is working perfectly fine, so if you are facing any issue, it is probably on your end.
At the time of writing, yes, Steam servers was facing technical issues, and as a result, players were not able to enjoy any of their favorite games. Thus, players were also getting the message "no internet connection error," and to fix it, all you can do is wait for the engineers to fix the problem with Steam servers.
You can keep an eye on websites like Downdetector to track the Steam server status, and once you see that there are no more reports, it means the error is fixed now. However, if you get this error when Steam is working fine, you should check if your internet connection is working fine or not, and if it is not, you should contact your Internet Provider.
If the error still exists, you should try reinstalling Steam, and if none of the above fixes work, create a ticket at the Steam Support website explaining your problem, and they will get back to you with a solution based on the information you provide.