Roblox Connection Errors: What to Do

14 August 2026 · 3 min read

GameMapa editorial · how we check facts
Checked: Claude (AI) — fact-checked against the Ukrainian original; not proofread by a native speaker

Roblox maintains a dedicated knowledge base of connection error codes and a general article on common network problems. Below is a summary of both sources.

List of Common Error Codes

The official list of common connection error codes: 264, 266, 267, 268, 270, 277, 279 (also known as ID 17), 280, 403, 524, and 600. Each code has its own support article with specific resolution steps for that exact error.

Network Settings

Roblox uses the UDP port range 49152–65535. For a stable connection, that entire range needs to be open in the firewall on your computer and in your router settings. If ports are closed or restricted by an ISP or a corporate network, the connection can drop even with a good internet speed.

Example: Error 264

Error 264 is a specific, well-documented case: it happens when the same account launches the same game from different devices at once. The official advice is to reinstall the app and check your network connection, rather than trying to play from two devices under one account at the same time.

Internet Speed and Browser Extensions

The recommended minimum internet speed for a connection is 4-8 Mbps; we covered the full list of device requirements in our piece on Roblox devices and requirements. Separate official advice is to temporarily disable ad blockers and browser extensions that might interfere with loading the game in the browser version.

If the Standard Steps Didn’t Help

If checking ports, speed, and extensions didn’t solve the problem, official support asks you to reach out with a specific set of details:

• Your Roblox username.
• The exact error text.
• Your device model.
• Your operating system version.
• The steps that lead to the error.

Without that set of details, support requests take longer to review, per the official description, since there isn’t enough data for diagnosis.

What Isn’t Officially Stated

• The average support response time. The checked pages describe what data is needed, but don’t name review timeframes.
• The infrastructure-level cause of every error code. Only error 264’s behavior is described in detail; for the rest, official pages give resolution steps but don’t always explain the technical cause.
• Whether a VPN affects how often these errors occur. VPNs aren’t directly mentioned on the checked pages.

If, after fixing the connection, it turns out the problem was tied to a hacked or suspiciously active account, it’s also worth checking our piece on Roblox account security.

A Sensible Default Order of Steps

If a game suddenly stops connecting, the officially sensible order is: first check whether the same account is running on another device (the cause of error 264), then check internet speed and open ports, and only after that disable browser extensions or contact support with the full set of details. That order saves time, because most common error codes get resolved in the first two steps, without needing to contact support at all.