Roblox Error Codes 277, 279, 266 and More: What They Mean

Roblox error 277 means the connection to the game server was lost, and error 279 (also shown as ID 17) means the game failed to connect. Both usually point to a network problem between your device and Roblox’s servers, according to Roblox’s Help Center. Check our live Roblox status page first, then work through the fixes below.

What do the common Roblox error codes mean?

The table lists codes whose Help Center articles we could confirm in November 2026. Roblox keeps a master list called “Roblox Error Codes” at en.help.roblox.com, and each code has its own article. We left out codes we could not confirm there, including 529.

Code	Roblox’s title or meaning	First thing to try
264	Same account launched an experience from a different device (per the index)	Close Roblox on the other device and rejoin.
266	Your connection timed out. Check your internet connection and try again.	Check the device’s date and time, then your network.
267	Banned from an experience	The experience’s creator set the ban; Roblox Support cannot remove it.
268	You have been kicked due to unexpected client behavior	Check date and time and other items in Roblox’s article.
277	Lost connection to the game server, please reconnect	Check your internet, reboot the device, reinstall Roblox.
279 / ID 17	Failed to connect to the Game	Check firewall, antivirus, date and time, then reinstall.
280	Your version of Roblox may be out of date. Please update Roblox and try again.	Update Roblox from the official store or website.
600	Banned from an experience	See the article for 267.

How do I fix error 277?

Roblox says error 277 appears when the client and servers cannot keep a network connection on PCs, Macs and mobile devices. The suggested fixes center on the network.

1. Try a different internet connection, such as a phone hotspot or a wired connection.
2. Restart the device and the router.
3. Uninstall and reinstall Roblox to clear corrupted files, using the official app store or roblox.com.
4. If the error is limited to one experience, try another one. A bug in a single experience is not an outage.

If only this game fails and others work, the experience’s own servers may be having trouble. Wait and try again later.

How do I fix error 279 (ID 17)?

Roblox’s article says 279 usually happens when the client app and the servers have trouble establishing a network connection. Its general connection guide says a firewall problem is very frequently the cause of ID 17.

1. Check the date and time on your device. Roblox says accurate clock settings keep the device in sync with its servers.
2. Allow Roblox through your firewall. Roblox’s firewall article says the quickest test is to turn the firewall off briefly. If that works, turn it back on and give Roblox access in the program permissions. Do not leave the firewall off.
3. Update your antivirus or add Roblox to its allow list. Roblox notes antivirus can quarantine Roblox files.
4. Keep UDP ports 49152 to 65535 open, which Roblox’s connection guide lists. If your router or provider-managed modem blocks UDP, contact your internet provider.
5. Reinstall Roblox.

Do not download “Roblox fixer” programs or cheat tools. They are unofficial, and Roblox’s anti-cheat can block or ban accounts that use them.

Is Roblox down or is my connection the problem?

Error 277 or 279 for every experience, on several devices, suggests Roblox may have an outage. Errors on one device only point to that device or your network. Use these checks.

1. Open our Roblox status page to see recent reports.
2. Try a second device on the same Wi-Fi.
3. Try the same device on mobile data. If it works, your home network is the cause. Our works on mobile data but not Wi-Fi guide explains why.
4. Check whether other websites and apps load. If not, see internet down at home.

For the general method, read how to tell if it’s down or just you.

What about school or work networks?

Roblox has an article called Troubleshooting Education Networks, which exists because school networks often block gaming traffic. If Roblox works at home but not at school, ask the network administrator. Do not try to bypass a school filter with VPNs or proxy sites. That breaks most school rules and can expose the device to risks.

What should parents know about ban codes?

Codes 267 and 600 are not outages. Roblox says the experience’s creator, not Roblox, issues a 267 ban, and Roblox Support cannot remove it or contact creators on your behalf. The article suggests contacting the creator through Roblox’s own messaging. Keep communication on the platform, and be careful with anyone offering to “unban” an account for money or a password.

Bottom line

Look up your exact code on Roblox’s Help Center, check our status page and a second network, then fix the date and time, firewall and installation. Skip any code you cannot find in Roblox’s own articles.

FAQ

What does Roblox error 277 mean?

Roblox’s article title is “Lost connection to the game server, please reconnect.” It is typically a network problem.

What is Roblox error 279 and ID 17?

It is “Failed to connect to the Game.” Roblox ties it to trouble establishing a network connection, often a firewall.

Is Roblox down when I get error 277?

Not necessarily. Compare another device and network and check our status page.

Where can I find the full list of Roblox error codes?

On Roblox’s Help Center, in the article called Roblox Error Codes.