Roblox error codes 268, 264 and 524: kicked for “unexpected client behavior”, same account on two devices, no permission to join a private server — what they mean and Roblox’s official fixes

Video: “How to Fix Roblox Error 268 | Kicked Due to Unexpected Client Behavior (Step-by-Step Guide)”, Get Droid Tips YouTube channel (independent creator, not Roblox), published March 15, 2025 (1:27 AM Paris time), 3 min 13 s. Third-party tutorial about error 268 only; Roblox’s own steps below take priority. https://www.youtube.com/watch?v=PcPMkZiGMzY

Three Roblox error codes keep coming back in player questions besides the connection errors 277 and 279: 268 (“You have been kicked due to unexpected client behavior”), 264 (“Same account launched experience from different devices”) and 524 (“You do not have permission to join this game”). They do not have the same cause, so they do not have the same fix. Below: what Roblox Support says about each one, the official steps in order, and what to check first on Windows, Mac and mobile. Roblox Support pages read on November 12, 2026 around 2:00 PM Paris time; TricknFix has not reproduced these errors.

Error 268 – “You have been kicked due to unexpected client behavior”: according to Roblox, it “generally occurs when there are issues with the network connection between the client application and servers”, and can also come from “a conflict with other applications, like antivirus software”.

Error 264 – “Same account launched experience from different devices”: the same account is trying to join the same experience from several devices at the same time.

Error 524 – “You do not have permission to join this game”: you do not have permission to join that experience or private server (privacy settings, private/VIP server you were not invited to, group-only game, server temporarily unavailable, or a network/device glitch).

Errors 277 and 279 (lost connection, failed to connect) are covered in our separate guide: https://tricknfix.com/articles/roblox-error-code-279-id-17-277-lost-connection-windows-pc-mac-mobile-roblox-support-official-fixes/

Reinstall Roblox. Windows 11: Control Panel > Programs > Programs and Features > right-click Roblox > Uninstall. Windows 10: Start > Settings > Apps > Apps & features > Roblox > Uninstall. Clear the app data after uninstalling: press Win+R, type CMD and press Enter, then type cd AppData\Local (Enter), rmdir /s Roblox (Enter), answer y, restart the PC and reinstall Roblox. Test another internet connection (for example a phone hotspot); if the error only happens on one network, Roblox recommends contacting your internet provider.

Check your firewall and antivirus: allow Roblox in the Windows firewall, update your antivirus, and if it flags Roblox, add it as an exception. Roblox gives the folder to exclude: C:\Users\(Your Windows Username)\AppData\Local\Roblox.

Close third-party programs that can interfere with the client: Roblox names “auto-clickers” and “other game launchers” as examples.

On Mac: reinstall the app and check that Roblox is allowed in Privacy & Security. On iPhone/iPad and Android: restart the device, force-close and reinstall the app, and make sure the date and time are correct.

Close Roblox on every other device signed in to the same account (another PC, phone, tablet or console), then join again. A brother or sister playing on your account at the same time triggers it too.

If the error persists with only one device open, Roblox lists the same steps as for error 268: reinstall, clear the AppData\Local\Roblox folder on Windows, try another network.

If you do not recognize the other session, change your password (general account-security advice, not a step from the 264 article).

Most common cause according to Roblox: your private server settings. Go to Settings (gear icon) > Privacy and content restrictions > Visibility & private servers > Private servers, and choose who can add you to their private servers. Players under 13 can only join private servers created by their friends. Ask the server owner to add your username to the “Server Members” list or to enable “Friends Allowed”; for a group-only game, join the right group first.

Server unavailable: wait a few minutes and try again, and check the experience’s community pages for maintenance.

Then restart the app or device, switch networks (Wi‑Fi/mobile data) or restart your router (unplugged about 30 seconds), and reinstall Roblox if needed.

Roblox reminds that its apps are not supported on virtual machines, cloud-based computers or mobile devices with altered or unofficial operating systems, and recommends an internet speed of at least 4–8 Mb/s.

If none of the steps works, note the exact error code and message, your device and operating system, and contact Roblox Support from the Roblox Error Codes page (https://en.help.roblox.com/hc/en-us/articles/36639955031060-Roblox-Error-Codes).

All Roblox guides and discussions on TricknFix: https://tricknfix.com/tags/roblox/

Roblox Support, “Error Code 268: You have been kicked due to unexpected client behavior” (read November 12, 2026): https://en.help.roblox.com/hc/en-us/articles/36793498799380-Error-Code-268-You-have-been-kicked-due-to-unexpected-client-behavior

Roblox Support, “Error Code 264: Same account launched experience from different devices” (read November 12, 2026): https://en.help.roblox.com/hc/en-us/articles/36665660855700-Error-Code-264-Same-account-launched-experience-from-different-devices

Roblox Support, “Error Code 524: You do not have permission to join this game” (read November 12, 2026): https://en.help.roblox.com/hc/en-us/articles/41933144508180-Error-Code-524-You-do-not-have-permission-to-join-this-game

Roblox Support, “Third party Applications or Antivirus Software Restrictions” (read November 12, 2026): https://en.help.roblox.com/hc/en-us/articles/36796112224148-Third-party-Applications-or-Antivirus-Software-Restrictions

Roblox Support, “Roblox Error Codes” (read November 12, 2026): https://en.help.roblox.com/hc/en-us/articles/36639955031060-Roblox-Error-Codes

Get Droid Tips on YouTube, “How to Fix Roblox Error 268 | Kicked Due to Unexpected Client Behavior (Step-by-Step Guide)” (March 15, 2025): https://www.youtube.com/watch?v=PcPMkZiGMzY