CITMTA & CIT FixCIT Tools

MTA:SA error code

MTA:SA error CD20

A file the server sends you could not be downloaded.

Code
CD20
Where you see it
The connection dialog
MTA's own wording
HTTP download failure
Family
CD codes

What it means

Servers deliver their scripts, models and images over HTTP while you connect. The download can fail because of your connection, a full drive, security software, or the server's own download host.

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 HTTP download failure.

How to fix it

Work down the list and stop when it is solved.

Longer version, with a source on every step: CD20: server resource download failed.

  1. 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.

  2. Check space and security software

    Make sure the drive MTA is on has room, and that no security tool is blocking MTA's downloads. Add MTA as an exception only if you can see it is the thing blocking them.

  3. Check your own connection

    Open a web page on the same computer. If other things are also failing, fix the connection first. A working website does not prove a game server is reachable, but a broken one explains a lot.

  4. 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.

  5. 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.