If the previous method did not help and you have ruled out all other possible causes, it is worth trying to delete the Steam cache files that may be causing the connection to fail. To do this, go to ...

Does your Steam Deck have WiFi disconnection issues? Several factors can cause this issue such as an internet connection issues, Steam servers issue, or router issue.

Uninstall, then reinstall Steam. 1] Check your internet connection If broadcasts fail to load on Steam and you keep getting this error, it could be your weak internet connection at fault.