CITMTA & CIT FixCIT Tools

MTA:SA error code

MTA:SA error CD30

The server rejected the nickname.

Code
CD30
Where you see it
The connection dialog
MTA's own wording
Invalid nickname
Family
CD codes

What it means

A CD code appears when a connection to a server fails, is refused, or ends. Most of them carry a second line with the server's own reason. MTA's own documentation gives this code as Invalid nickname.

How to fix it

Work down the list and stop when it is solved.

  1. Change your nickname in MTA

    Open MTA, go to Settings, then Multiplayer, and set a different nickname. Keep it short, use letters and numbers, and avoid spaces and unusual symbols.

  2. Try the connection again

    Close MTA, open it again and connect once more. A single failed attempt can come from a restart on the server or a short break in your own connection.

  3. Check your log if it keeps happening

    Paste the message, or MTA's core.log, into the Fix tool on this site. It runs on your own computer and points at the matching steps.

Still stuck? The Fix tool reads MTA's own log on your computer and points at the matching steps. Nothing is uploaded.

Open the Fix tool

Other CD codes

Where this comes from

Official Error Codes catalog; full message and issuer remain necessary.

Meanings read from these sources on 5 September 2026 and written in our own words here.