It’s a common issue with Steam. Try the following:

- Restart your computer.

- Uninstall and reinstall Steam.

- Unplug your router and modem, wait a few minutes, and then plug them back in.

- Change the DNS on your computer to 8.8.8.8 and 8.
If you’re experiencing this error, you’ll need to make sure that your firewall settings aren’t blocking Steam from contacting the Steam servers. On Windows, you’ll need to go into the Windows Firewall settings and add an exception for Steam.
The most common cause of this problem is a firewall that is blocking communication between the game and the Steam servers. If you currently have a firewall running, try disabling it and restarting your computer. If you don't use a firewall, try turning off your router and your computer, waiting a minute, and then turning them both back on.
If you’re getting an error message when you try to connect to Steam, there are a few things you can try before you start freaking out. First, make sure that your firewall and antivirus software aren’t blocking Steam. Next, clear your temporary files and cookies and restart your computer.
Emails are one of the most important forms of communication between businesses and their customers, and Gmail is one of the most popular forms of email communication. If you’re trying to send an email to more than one person, Gmail might not let you. Gmail only lets you send up to 10 recipients per email. Steam, the popular online gaming platform, has an annoying error that says “there was an error communicating with the Steam servers. Please try again later.” If you’re having this problem, there’s a simple fix! Add the following lines to a text file called host.