Unplug your modem (and your router, if it’s a separate device) from the power socket.Here’s how you can restart your modem & router: It is possible that your modem & router are being overflooded with data, screeching your internet to such a halt that Steam could not connect to its servers. Once you’ve eliminated server maintenance as a possible cause, you should start look into your own home network. If the servers are up and running and yet the error occurs, please move on to Fix 2, below.If the servers are indeed down, then there’s not much you can do but wait for the developer staff to do their thing and recover the servers.This is because occasionally, Steam would schedule maintenance for the servers to patch possible bugs and install new features.
The first thing you should check is whether Steam servers are down for the moment. How to fix Steam is having trouble connecting to the Steam servers
