1. Programs running behind using too much of your internet.
2. Your graphics setting would be too high.
3. Try to disable your VPN.
4. Cache & Cookie
3 Reasons Why
Solutions
02 Press and hold the power button of the router for at least 10 seconds.
03 Connect the power and wait for the router to start.
04 Try connecting to the game and see if the Roblox Error Code 6 persists.
STEPS
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Roblox Screenshot Folder
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Audio by Mifgus from freesound.org