For PC gamers, there are few things more frustrating than settling in for a gaming session only to be greeted by a connection failure. Among the various connectivity issues that plague the Steam client, Error Code -105 is one of the most persistent. It often leaves users confused, wondering if the problem lies with their internet service provider, the Steam servers, or their own local network configuration. Understanding the nature of this error is the first step toward resolution.
To understand why this happens, it helps to distinguish between the types of failures we encounter in computing.
In the broader context of system performance and human behavior, one reference differentiates between "error" and "mistake" as follows: An 'error' is a deviation from accuracy or a failure to reach a desired state due to systemic or external factors, whereas a 'mistake' is often a result of incorrect input or judgment.
Steam Error Code -105 falls squarely into the former category.
It is a system-side notification indicating that the client is unable to reach the Steam servers.
It is not necessarily a mistake on your part, but rather a disruption in the communication path that needs to be addressed.
What Is Steam Error Code -105?
In technical terms, Error Code -105 is a DNS (Domain Name System) issue.
When you launch Steam, your computer attempts to connect to the Valve servers by resolving the server's domain name into an IP address.
If your computer cannot perform this lookup, or if the connection is blocked along the way, Steam throws the -105 error.
This means your internet might be working perfectly fine for web browsing, but your specific route to the Steam content servers is blocked or misconfigured.
Common Causes of the Error
Before jumping into complex technical fixes, it is helpful to identify the likely culprits.
Understanding why the error occurs can save you time.
Most often, the issue is caused by one of the following factors:
- DNS Cache Corruption: Your computer stores a history of website IP addresses to speed up connections. If this cache contains outdated or corrupted information, it can prevent Steam from connecting.
- ISP or Router Interference: Sometimes, your Internet Service Provider (ISP) or your router's internal firewall may block specific ports that Steam requires.
- Third-Party Software: Antivirus programs, VPNs, or firewalls can sometimes mistakenly flag Steam’s connection attempts as suspicious, thereby cutting off the service.
- System-Wide Connection Issues: While Error -105 is specific to Steam, it can occasionally be triggered by a broader disruption in your local network settings.
Step-by-Step Solutions for Steam Error Code -105
If you are encountering this error, follow these troubleshooting steps in order.
Most users find success within the first few attempts.
1. Flush Your DNS
The most common fix involves resetting the DNS cache. This clears out old data and forces your computer to request a fresh connection. On Windows, open your Command Prompt as an Administrator. Type ipconfig /flushdns and hit Enter. Once you see the success message, restart Steam.
2. Change Your DNS Settings
If the default DNS provided by your ISP is unstable, you can switch to a more reliable public DNS, such as Google DNS (8.8.8.8 and 8.8.4.4) or Cloudflare (1.1.1.1).
Navigate to your Network and Sharing Center, access your adapter settings, and update your IPv4 properties to use these custom DNS servers.
3. Check Your Proxy Settings
Sometimes, a proxy configuration can interfere with Steam.
Go to your Windows Settings, search for "Proxy Settings," and ensure that "Automatically detect settings" is turned on and that any manual proxy server options are disabled.
Steam works best with a direct connection.
4. Restart Your Network Hardware
Never underestimate the power of a simple power cycle.
Turn off your router and modem, wait for at least 30 seconds, and plug them back in.
This clears the internal router memory and forces it to re-establish a clean handshake with your ISP.
Conclusion
Steam Error Code -105 can be a nuisance, but it is rarely a sign of permanent damage to your account or your hardware.
By understanding the distinction between a system error and user input, you can approach the troubleshooting process logically.
Start with the simplest fixes like flushing your DNS and checking your proxy settings.
In most cases, these steps will resolve the connection issue, allowing you to get back to your games without further delay.
Frequently Asked Questions (FAQ)
Is Error Code -105 a sign that my Steam account is banned?
No.
Error Code -105 is a network connectivity issue related to DNS resolution.
It is unrelated to your account status or VAC bans.
Will flushing my DNS harm my computer?
Not at all.
Flushing your DNS simply clears the local cache of website IP addresses, forcing your computer to request fresh information.
It is a safe and standard troubleshooting procedure.
Does using a VPN fix Error -105?
Sometimes a VPN can bypass specific ISP restrictions that cause Error -105.
However, it can also cause the error if your VPN connection is unstable.
Try disabling your VPN first to see if that resolves the issue.
How do I know if the Steam servers are down?
You can check websites like SteamStat.us to see if Steam services are experiencing a global outage.
If the servers are down, no amount of troubleshooting on your end will fix the error.
Written by: Matthew Garcia
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