You can open two Roblox windows on the same computer using the Roblox launcher or by running the game through a web browser alongside the launcher
The simplest method is to launch Roblox once through the official launcher (which installs on your computer), then open a second window by visiting the Roblox website in your web browser and starting a game from there. Both windows will run at the same time on the same account or different accounts, depending on what you need. This works on Windows and Mac.
The reason this works is that the Roblox launcher and the web browser are separate programs, so Windows and Mac treat them as independent applications. Each can run a Roblox game without interfering with the other. You will need enough computer memory and processing power to run both smoothly — if your computer slows down noticeably, closing one window will free up resources.
Key Takeaways
- Open Roblox through the launcher first, then open a second window through your web browser to run two games at once.
- Both windows can use the same account or different accounts, depending on whether you want to play together or separately.
- Running two windows uses more computer memory, so close one if your computer becomes slow or unresponsive.
- If you are on a school or work computer, check with your IT department first — some networks block multiple Roblox connections from the same device.
Opening the first window through the Roblox launcher
read and install the Roblox launcher from the official Roblox website if you do not already have it. Go to roblox.com, click the green "read" button at the top of the page, and follow the installer. Once installed, open the launcher, sign in with your Roblox account, and start any game you want to play. This becomes your first window.
Leave this window open and running. Do not close it — you will open the second window in a different program while this one stays active. The launcher window will continue to run the game normally while you move to the next step.
Opening the second window through your web browser
Open your web browser (Chrome, Firefox, Safari, or Edge) and go to roblox.com. Sign in with your Roblox account — use the same account as the launcher window if you want to play together, or a different account if you want to play separately. Navigate to any game and click the green "Play" button.
Your browser will ask permission to open the Roblox launcher. Instead of clicking "Open," look for a button or option that says "Play in Browser" or "Play on Web." If you do not see this option, right-click the Play button and select "Open in New Tab" — this sometimes forces the browser to run the game directly instead of launching the separate process.
If the browser still tries to open the launcher, close that prompt and try a different browser. Some browsers handle this differently, and Firefox or Safari may give you the "Play in Browser" option when Chrome does not.
What to do if both windows keep trying to use the launcher
If clicking Play in your browser keeps opening the launcher instead of running the game in the browser, you can change your default Roblox player. Right-click the Roblox launcher icon on your desktop or in your Start menu (Windows) or Applications folder (Mac), select "Properties" or "Get Info," and look for an option related to "default player" or "launch settings." Some versions of the launcher let you disable this behavior directly in the settings menu inside the launcher itself.
If you cannot find this setting, the most reliable workaround is to use two different browsers. Run the launcher in the background, then open a second browser (one you do not normally use) and play through that. For example, use Chrome for the launcher and Firefox for the browser window, or vice versa.
Managing two windows on a slower computer
Running two Roblox windows at the same time uses more of your computer's memory and processing power. If your computer has less than 8 GB of RAM or is more than five years old, you may notice slowness, lag, or stuttering in both games. Close one window if this happens — you will when ready feel the difference.
You can also reduce lag by lowering the graphics settings in both games. In Roblox, go to Settings (the gear icon), select Graphics, and move the quality slider down. Lower graphics settings use less memory and let both windows run more smoothly. Closing other programs (like Chrome tabs, Discord, or Spotify) while you play also frees up memory for Roblox.
Running two windows on different accounts
If you want to play on two different Roblox accounts at the same time, sign out of one window before opening the second. Open the launcher, sign in with Account A, and start a game. Then open your browser, go to roblox.com, sign in with Account B, and start a game there. Both windows will now be running different accounts simultaneously.
This is useful if you have a main account and an alternate account, or if you and someone else want to play together on the same computer. Each account earns its own Robux and progress separately, so games you play on Account A will not affect Account B.
Checking your network settings if you are on a school or work computer
Some schools and workplaces block multiple connections to Roblox from the same device as a security measure. If you try to open a second window and it will not load, or if you get an error message about your connection, your network may have this restriction in place.
Contact your school or workplace IT department and ask if they allow multiple Roblox connections from a single computer. If they do not, you will not be able to run two windows on that network. This restriction is set by the organization, not by Roblox, so only they can change it.
Frequently Asked Questions
Will running two Roblox windows get me banned?
No. Roblox allows multiple windows to run on the same computer. However, using multiple accounts to cheat, exploit games, or break a game's rules can result in a ban — the ban comes from breaking the rules, not from having two windows open. Play normally on both accounts and you will not have a problem.
Can I play the same game in both windows at the same time?
Yes, you can open the same game in both windows. If you are on the same account, you will be in the game twice. If you are on different accounts, you will be two separate players in the same game world. Some games may have limits on how many times one account can join, so test it first.
What if one window closes when I open the second one?
This usually means your computer does not have enough memory to run both at once. Close the second window, restart your computer, and try again. If it keeps happening, your computer may not be powerful enough to run two Roblox games simultaneously. Try lowering graphics settings or closing other programs before opening the second window.
Do I need two Roblox accounts to open two windows?
No. You can use the same account in both windows. Both will show the same inventory, Robux balance, and progress. If you want separate progress on two accounts, you will need two different Roblox accounts, but you can also run two windows on one account if that is what you need.
Will two windows use twice as much internet?
Yes, roughly. Two active Roblox games will use more bandwidth than one. If you have a slow internet connection, both windows may lag or disconnect. If this happens, close one window and play with just one. A connection of at least 5 Mbps read speed should handle two windows without major problems.