MTA:SA fix
CL33: Main file has an incorrect name
MTA stops at start because it was started from a program file that is not named Multi Theft Auto.exe. Press Retry, or start Multi Theft Auto.exe from the MTA folder yourself.
Main file has an incorrect name
Codes on this page: CL33
Steps
Press Retry
Press Retry in the Error box. MTA then opens Multi Theft Auto.exe from the MTA folder, if that file is there.
Source: MTA source code
Start Multi Theft Auto.exe yourself
Open the MTA folder in File Explorer and start Multi Theft Auto.exe from there. An MTA team member asked a player with CL33 to test exactly this.
Source: MTA forum
Reinstall MTA into the default folder
Reinstall MTA. When the installer asks for the folder, type the default installation folder yourself before you go on.
Source: MTA forum
Still CL33: scan for viruses
Only if CL33 comes back after the steps above.
Scan your PC with a good antivirus scanner. In a 2016 forum case, an MTA team member found that a virus had changed the path MTA was started from. That answer was about one player's PC.
Careful: Be careful with registry changes. The MTA team member said that fixing that registry value is tricky: if you do one thing wrong, no Windows program will start, not even regedit.
Source: MTA forum
See also: CL29: client integrity warning at launch, CL30: Data file is missing or modified. Possible virus activity, MTA will not start and shows no clear error
An MTA team member explained CL33 in 2016: the MTA launcher was renamed to the file name shown in the message, which it should not be.
MTA checks that its program file is named Multi Theft Auto.exe.
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.
Other problems like this
- Sorry, game not found: MTA cannot find GTA San Andreas
- Antivirus says MTA is a virus, or GTA:SA executable is incorrect or missing
- CL29: client integrity warning at launch
- Another MTA or GTA instance is already running
- MTA data files or core.dll are missing
- MSVCR, VCRUNTIME or core.dll cannot load
All fix guides · Every MTA:SA error code · Crash codes and offsets
Where this comes from
MTA source code and an MTA team answer on the MTA forum (2016)
- github.com/multitheftauto/mtasa-blue/blob/master/Client/loader/MainFunctions.cpp
- forum.multitheftauto.com/topic/90196-cl33-error-mtasa/
Read on 23 October 2026 and written in our own words here.