Error list.

Install and put the files into System32 - C:\Windows\System32 Note: Don't put the folders, put the files inside the folder.

Make sure you are running FiveM in Fullscreen mode.
Make sure your FiveM is in release mode, redENGINE does not support beta/unstable mode.
If you have any type of antivirus, uninstall it completely.
Make sure everything is up to date, windows, drivers, video card.
Try clearing your FiveM cache folder. (search on youtube how to clean fivem cache).
Make sure you are injecting when you are on the FiveM menu (server list).
Make sure your Steam Overlay is working on FiveM.
Apps running in the background can interfere with performance and cause crashes, so avoid using applications that the background is animated, close launchers such as origin, ubisoft, epic games, Riot Vanguard, Faceit AC, terminate unnecessary applications, do not let anything hinder the performance of FiveM.
Graphic mods, unfortunately any kind of graphic mod in FiveM can cause usage conflicts with redENGINE.
Open cmd as admin -> type sfc /scannow -> wait for scan to complete and it will fix all corrupt windows files -> Restart PC after files are fixed.
Ensure that GPU Drivers are up to date -> Restart PC after any updates have been installed.
Ensure that Windows is up to date.
Ensure that Windows Defender is completely off.
Ensure that your Windows User has Administrator Privileges.
Reinstall redENGINE program.
Make sure the FiveM shortcut you are using is called FiveM.exe!

Go to your GTA V folder, there is a file called imgui.ini, open it and delete everything inside it and save the file, now open redEngine and FiveM again, making sure the steam overlay is enabled. After that it should be fixed.

Last updated 10 months ago

Install and put the files into System32 - C:\Windows\System32 Note: Don't put the folders, put the files inside the folder.

Make sure you are running FiveM in Fullscreen mode.
Make sure your FiveM is in release mode, redENGINE does not support beta/unstable mode.
If you have any type of antivirus, uninstall it completely.
Make sure everything is up to date, windows, drivers, video card.
Try clearing your FiveM cache folder. (search on youtube how to clean fivem cache).
Make sure you are injecting when you are on the FiveM menu (server list).
Make sure your Steam Overlay is working on FiveM.
Apps running in the background can interfere with performance and cause crashes, so avoid using applications that the background is animated, close launchers such as origin, ubisoft, epic games, Riot Vanguard, Faceit AC, terminate unnecessary applications, do not let anything hinder the performance of FiveM.
Graphic mods, unfortunately any kind of graphic mod in FiveM can cause usage conflicts with redENGINE.
Open cmd as admin -> type sfc /scannow -> wait for scan to complete and it will fix all corrupt windows files -> Restart PC after files are fixed.
Go to and download all the runtimes it has to offer -> Restart PC after all have been installed.
Ensure that GPU Drivers are up to date -> Restart PC after any updates have been installed.
Ensure that Windows is up to date.
Ensure that Windows Defender is completely off.
Ensure that your Windows User has Administrator Privileges.
Reinstall redENGINE program.
Make sure the FiveM shortcut you are using is called FiveM.exe!

Go to your GTA V folder, there is a file called imgui.ini, open it and delete everything inside it and save the file, now open redEngine and FiveM again, making sure the steam overlay is enabled. After that it should be fixed.