> For the complete documentation index, see [llms.txt](https://docs.tzproject.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tzproject.com/support/errors/error-4-open-tzx-before-fivem.md).

# Error #4 - Open TZX Before FiveM

## Solution:

1. Close FiveM if it is running before launching TZX.
2. Launch TZX first, then open FiveM to avoid process conflicts.
3. Check background processes:
   * Open Task Manager (Ctrl + Shift + Esc).
   * End any FiveM-related processes.
4. Restart your computer to close active processes and prevent conflicts.