.ROBLOSECURITY cookie to authenticate and control your account. Cookies expire periodically and can be invalidated by logging out, so you may occasionally need to re-import a fresh one. The guides below cover the most common cookie-related problems and how to fix them.
"Cookie is invalid"
"Cookie is invalid"
Cookie was imported but login still fails
Cookie was imported but login still fails
How to get a fresh cookie (Chrome)
How to get a fresh cookie (Chrome)
How to get a fresh cookie (Firefox)
How to get a fresh cookie (Firefox)
Cookie stopped working after being active
Cookie stopped working after being active