If you're staring at your screen wondering how to fix Roblox error code 264, you've probably realized by now that the game thinks you're trying to be in two places at once. It's one of those super annoying interruptions that usually pops up right when you're about to jump into a game with friends. You get a pop-up saying, "Same account launched from different device. Reconnect if you prefer to use this device," and then everything just stops.
Don't panic, though. It doesn't necessarily mean your account has been hacked—though we'll talk about that just in case—but most of the time, it's just a simple glitch where Roblox hasn't realized you closed the game on your phone before opening it on your PC. Let's walk through how to clear this up so you can get back to gaming without the headache.
What is this error actually telling you?
Before we dive into the fixes, it helps to know what's going on behind the scenes. Error code 264 is basically a "duplication" check. Roblox doesn't allow a single account to be active in a game session on two different devices simultaneously. If you were playing on your iPad in the living room and then hopped onto your laptop in your bedroom without properly closing the app on the tablet, the server gets confused.
It still sees a "ghost" session active on the first device. When you try to join a new game, the server says, "Wait a minute, you're already here," and throws the 264 code at you. It's a security feature, really, but it can be a bit overzealous sometimes.
The quickest fix: Log out of all sessions
The most effective way to handle this is to force Roblox to forget every session you have open. Instead of hunting down every tablet, phone, and console in your house to see if the app is still running, you can do it all from one spot.
- Open your browser and log into your Roblox account.
- Head over to the Settings gear icon in the top right corner.
- Click on Security.
- Scroll all the way to the bottom until you see a section labeled "Log Out of All Other Sessions."
- Click that button.
What this does is essentially "kill" any active login anywhere else. It's like a master reset for your account's current activity. Once you've done this, wait about thirty seconds, then try launching the game again on the device you actually want to use. Most of the time, this fixes the issue instantly.
Clearing out the Roblox cache files
If logging out didn't work, the problem might be stuck in your computer's temporary files. Sometimes the Roblox app on Windows stores data that tells it a session is still active even when it isn't. Clearing the cache is like giving the app a fresh start without having to reinstall everything.
To do this, you'll need to dive into your temporary folders. Don't worry, it's not as scary as it sounds.
First, make sure Roblox is completely closed. Then, press the Windows Key + R on your keyboard to open the Run box. Type in %localappdata% and hit Enter. This will open a folder full of app data. Look for the folder named Roblox.
Inside that folder, you'll see a bunch of subfolders. You can actually just delete the whole Roblox folder here if you want to be thorough, or just look for the "Versions" and "Downloads" folders to clear things out. Don't worry—deleting these files won't delete your account or your items; it just forces the app to redownload the latest settings and files the next time you start it up.
Dealing with browser cookies
If you play Roblox through a web browser rather than the standalone app, your browser might be holding onto a "cookie" that says you're still logged in elsewhere. This is especially common if you use Chrome or Edge.
Try clearing your browser cache and cookies. In Chrome, you can do this by hitting Ctrl + Shift + Delete. Make sure you select "Cookies and other site data" and "Cached images and files." You don't have to delete your whole history, but clearing these specific bits can help the Roblox website realize that you are starting a fresh session.
After you clear the cache, you'll have to log back in. Try launching a game again and see if the 264 error has vanished.
Check for background processes
Sometimes, Roblox doesn't close properly on your PC. You might have clicked the "X" on the window, but the actual process is still hanging out in the background, eating up your RAM and telling the servers you're still playing.
To check for this, right-click your taskbar and open the Task Manager (or hit Ctrl + Shift + Esc). Look through the list of processes for anything named "Roblox" or "Roblox Player." If you see one, right-click it and select End Task.
Once you've killed all those hidden background processes, try opening the game again. It's surprising how often a "zombie" process is the culprit behind these types of errors.
Is your account secure?
I hate to be the bearer of bad news, but if you've tried all the steps above and the error keeps coming back—meaning you get kicked out because "someone else" logged in—you might have a security problem. If you're 100% sure you aren't logged in on your phone or console, and you've cleared your cache, yet the error persists, it's possible someone else has your password.
If you suspect this, don't wait. Go back to your Security settings and use that "Log Out of All Other Sessions" button again. Immediately after that, change your password. Make it something strong that you haven't used before.
Also, this is a great time to enable Two-Factor Authentication (2FA) if you haven't already. Using an authenticator app or even email verification adds a layer of protection that makes it way harder for anyone to jump onto your account and trigger error 264 while you're trying to play.
A quick note for mobile users
If you're getting this on a phone or tablet, the fix is usually even simpler. Sometimes the app just gets "stuck." Try force-closing the app by swiping it away from your recent apps list. If that doesn't work, try logging out of the app manually and logging back in.
On mobile, the 264 error is almost always because the app was running in the background while you tried to play on a PC. Phones are great at keeping apps "suspended" in the background, which is usually helpful but can be a pain for Roblox's session tracking.
Wrapping things up
Dealing with error codes is never fun, but "how to fix Roblox error code 264" is luckily one of the easier puzzles to solve. It's almost always just a matter of telling the Roblox servers, "Hey, I'm only over here now!"
Whether it's hitting that "log out of all sessions" button, clearing out your local cache, or just making sure your account is locked down tight with a new password, you should be back in your favorite experiences in no time. Most of the time, a simple restart and a quick session clear does the trick. Now, go get back into the game and have some fun!