Launching

How to Launch

1

Open Join Server

Click the green Join Server button in the accounts header.

2

Enter Server Code

Type your ERLC private server code (4 characters).

3

Choose Target

Select Launch all or Launch selected (only your selected accounts).

4

Launch

Click Launch. Watch real-time progress per account.

What Happens Per Account

1

Pre-validate the cookie

If enabled, Alt Central pre-validates the cookie and catches dead cookies in ~1 second.

2

Get a CSRF token

Alt Central gets a CSRF token from Roblox.

3

Request an auth ticket

Alt Central requests the one-time token for game joins.

4

Save rotated cookie

If Roblox changed the cookie during auth, Alt Central saves the rotated cookie.

5

Write RobloxCookies.dat

Alt Central writes RobloxCookies.dat for DPAPI-encrypted cookie injection.

6

Launch RobloxPlayerBeta.exe

Alt Central launches RobloxPlayerBeta.exe directly with the auth ticket and join URL.

7

Clean RobloxCookies.dat

Alt Central wipes RobloxCookies.dat after launch to prevent Error 773.

8

Set low priority

Alt Central drops the process to BELOW_NORMAL.

9

Minimize the window

Alt Central minimizes the window.

Launch Settings

Setting	Default	Description
Batch Size	5	Accounts per wave
Wave Delay	10s	Seconds between each account
Max Accounts	30	Hard cap on total instances
Stagger Launches	On	Launch in waves (recommended)
Low GPU Mode	On	Reduce graphics per instance

For 20+ accounts, use 15-20s delay to avoid rate limits. Batch size of 5 with 12s delay is the sweet spot.

After Launch

• Anti-AFK starts automatically

• Session timer starts counting in the sidebar

• Discord Rich Presence updates (if enabled)

• Auto-verify runs 30s after launch to confirm which accounts are actually in the server

Leave All

Click Leave All to:

• Kill ALL running Roblox processes

• Restore original graphics settings

• Log session duration to leaderboard

• Reset all statuses to Offline