Cookies

Cookie Shows Valid but Fails on Launch

The #1 reported issue. Here's why it happens and how to fix it.

Health Check validates via a simple GET request. Launching requires a full auth ticket flow which is stricter.

Causes:

1. IP binding — cookie created on different network than where you're launching

2. Cookie rotation race — Roblox rotated it between validation and launch

3. Rate limiting — too many auth requests, 429 not always cleanly reported

Fix:

• Enable Pre-Launch Validation in Settings (validates from your IP right before launch)

• Get cookies on the same PC and network where Alt Central runs

• Increase launch delay to 15-20 seconds

• Launch in smaller batches (5-10 at a time)

Cookies Expire After a Few Hours

Roblox periodically invalidates sessions — after IP changes, security sweeps, or updates.

Fix:

• Enable Auto-Refresh Cookies in Settings

• Enable Background Health Sweep to catch dead ones early

• Set Auto-Purge Expired to clean automatically

Bulk Paste Shows All Invalid

Check Format

• Paste the full _|WARNING:-DO-NOT-SHARE-THIS... value

• Each cookie on its own line

• No quotes or extra whitespace

Check IP

Check Rate Limit

"EXPIRED" Badge but Cookie Might Work

Health Check uses a single API call. A network timeout or Roblox hiccup can incorrectly mark a cookie expired.

Fix: Run Health Check again. If it consistently shows expired, the cookie is genuinely dead.