How do DNS settings or proxy servers affect Steam's ability to connect online for updates?

Incorrect DNS settings can prevent your computer from properly resolving Steam's server addresses, making it appear offline. You can try changing your DNS servers to public ones like Google DNS (8.8.8.8 and 8.8.4.4) or Cloudflare DNS (1.1.1.1 and 1.0.0.1). Proxy servers, if configured incorrectly or if they are unreliable, can also block Steam's connection. Ensure no proxy server is configured in your system settings or browser that might be affecting Steam, or temporarily disable it.