Cookies

Cookies are the core of Alt Central. A .ROBLOSECURITY cookie is how Roblox identifies a logged-in account.

Cookie Lifecycle

1

Creation

Cookie is generated when you log into Roblox via a browser.

2

Active

Cookie works for authentication and game launching. Can last hours to days.

3

Rotation

Roblox may change the cookie during use. Alt Central auto-saves the new cookie when this happens.

4

Expiration

Cookie becomes invalid. Causes: password change, forced logout, security sweep, or IP change.

Freshness Indicators

Every account row shows a colored dot indicating cookie health:

Color	Meaning	Time Since Validation
🟢 Green	Fresh and valid	Less than 1 hour
🟡 Yellow	Likely valid	1 to 6 hours
🟠 Orange	May be stale	6+ hours
🔴 Red	Dead / expired	Confirmed invalid
⚫ Grey	Unknown	Never checked

Freshness is based on the lastRefresh timestamp — updated every time the cookie passes a validation check (health check, background sweep, or pre-launch validation).

Adding Cookies

Single

1. Click Add Account → Single Cookie

2. Paste the .ROBLOSECURITY value

3. Click Add Account

4. The app validates immediately and fetches username + avatar

When copying cookies from your browser, do NOT log out afterward. Logging out invalidates the cookie instantly. Just close the window.

Bulk Paste

File Import

RAM Import

Source Tags

Every account tracks where its cookie came from:

Tag	Origin
manual	Pasted individually via Single Cookie
file	Imported from a text file
ram	Imported from Roblox Account Manager
pool	Claimed from the Club 33 cookie pool
bulk	Added via Bulk Paste
backup	Restored from a .acbak backup file

Source tags show as a small label next to the username in the account row.

Pre-Launch Validation

This is the fix for "cookies show valid then expire after first launch."

When enabled in Settings → Account Freshness → Pre-Launch Validation:

1. Before launching, the app sends a quick authenticated check per cookie from your own IP

2. If Roblox returns 401 → cookie is dead, immediately skipped (saves 30+ seconds per dead cookie)

3. If Roblox returns 200 → cookie is valid, proceeds to launch

4. Progress shows: Validating 5/14: username...

This catches cookies that are IP-pinned, expired since last health check, or invalidated by Roblox.

Background Health Sweep

When enabled in Settings → Account Freshness:

• Runs every 30 minutes while the app is open

• Silently validates all non-ingame cookies

• Dead cookies are auto-marked as expired

• No user action required — your list cleans itself up

• Triggers auto-purge after each sweep

Auto-Purge Expired

Set a number of hours in Settings → Account Freshness → Auto-Purge Expired:

• Cookies expired for longer than your threshold are automatically removed

• Set to 0 to disable

• Runs after every background sweep and on app startup

Cookie IP Binding

Roblox ties cookies to the IP address they were last used from. If a cookie was authenticated from a different IP (VPN, proxy, different network), it may return 401 from your IP even though it's technically still "alive."

Always get cookies on the same PC and network where you run Alt Central.

Cookie Rotation

Roblox periodically rotates .ROBLOSECURITY cookies. When this happens during launch, Alt Central detects the new cookie in the HTTP response and saves it automatically. You'll see a log: Cookie rotated for username — updated.