FiveM crash on startup – legitimacy.dll / KERNELBASE.dll exception

FiveM Client Support
,
1

What is the issue you’re having?

Hello,

I am experiencing a crash immediately after launching FiveM. The client closes with an “Exception, unhandled!” error and uploads a crash report automatically.

Crash details:

Crash signature: kernelbase.dll+BFE0A
Modules involved:
KERNELBASE.dll
VCRUNTIME140.dll
legitimacy.dll
Report ID: si-2879c55378ad434aa4e6c68d6347d0d1

Stack trace shown in the error window:

KERNELBASE.dll+BFE0A
VCRUNTIME140.dll+6720
legitimacy.dll+208733
legitimacy.dll+2087BC
legitimacy.dll+20BDEE
legitimacy.dll+20BC54
legitimacy.dll+20BA3A

The issue happens on startup before joining any server.
I already tried restarting the PC and relaunching FiveM, C++, uninstall FiveM and delete folders in APPDATA but the crash persists.

Any help would be appreciated.

What have you tried already to fix the issue?

Reinstall game and FiveM
C++ Installed
Drivers

What server did you get this issue on?

on start FiveM

Windows version

Windows 11

System specifications

Asus TUF Gaming F15 with 512GB
3050 graphics card
AMD Ryzen™ 7 7800X3D

Antivirus software

Windows Defender

CitizenFX crash zip file (‘Save information’ on a crash)

CfxCrashDump_2026_05_27_21_37_39.zip (50.3 KB)

2

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3

this is a nasty one, but lets help before they actually close the ticket.

KERNELBASE and VCRUNTIME140 in your stack means a missing or corrupt Visual C++ redistributable; reinstall the latest Microsoft Visual C++ 2015-2022 x64, run FiveM as a regular user, and clear your entitlement tokens.

add me on discord if there is further problems. onebrickaday