How can network connectivity issues be diagnosed and fixed when encountering Steam error code 50?

To diagnose network issues, ensure your internet is generally stable by browsing other sites. Try connecting your computer directly to the modem via an Ethernet cable instead of Wi-Fi to rule out wireless interference. Temporarily disable any VPN or proxy services you might be using, as they can misroute Steam's connection. You can also run a ping test to `steampowered.com` in your Command Prompt to check server reachability.