MTA:SA error code
MTA:SA error CD19
The client verification step did not complete.
How to fix it
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.
Install the current MTA update
Close MTA and run the current installer from multitheftauto.com. Several connection codes are simply an old client meeting a newer server.
Repair your MTA installation
Run the current installer from multitheftauto.com over your existing installation. It replaces MTA's own files without touching your settings.
Still not fixed? Copy the whole message, not only the code, and check your log in the Fix tool. It is read on your own computer.
About this code
MTA checks the client during connection. A slow or interrupted connection can stop that check finishing.
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 CD19 as Client verification failed.
All fix guides · Every MTA:SA error code · Crash codes and offsets
Where this comes from
Read on 5 September 2026 and written in our own words here.