How to Fix Roblox Faulting Module ntdll.dll Crash (2026)
How to Fix Roblox Faulting Module ntdll.dll Crash (2026) addresses the operational symptom where windows event viewer logs event id 1000: faulting application name: robloxplayerbeta.exe, faulting module name: ntdll.dll, exception code: 0xc0000005 or 0xc0000409. It is predominantly caused by ntdll.dll is the core windows nt kernel system library. crashes occur when roblox passes corrupted memory addresses to system apis due to driver hooking conflicts (rtss, obs, discord) or corrupted system runtime files. and is resolved by run sfc /scannow in admin cmd, clear roblox temp directory, and disable conflicting background graphics overlays.
| Telemetry Metric | Verified Value |
|---|---|
| Observed Symptom | Windows Event Viewer logs Event ID 1000: Faulting application name: RobloxPlayerBeta.exe, faulting module name: ntdll.dll, exception code: 0xc0000005 or 0xc0000409. |
| Root Cause | NTDLL.dll is the core Windows NT kernel system library. Crashes occur when Roblox passes corrupted memory addresses to system APIs due to driver hooking conflicts (RTSS, OBS, Discord) or corrupted system runtime files. |
| Platforms | Windows 11, Windows 10 |
| Quick Triage | Run SFC /scannow in Admin CMD, clear Roblox temp directory, and disable conflicting background graphics overlays. |
| Error Code Mapping | Roblox Error Code 0xc0000005 → |
How to Fix Roblox Faulting Module ntdll.dll Crash (2026)
Does the crash occur immediately within 3 seconds of launching?
Step-by-Step Diagnostic Checkpoints
Pinpoint the failure mechanism on your device before modifying files:
Does the crash occur immediately within 3 seconds of launching?
A third-party injected DLL or overlay is conflicting with Byfron anti-tamper syscall hooks.
A corrupted shader cache or local AppData file is causing a heap memory fault during gameplay.
Prescribed Action:
Force kill all overlay hooks and clear Roblox temp cache:
taskkill /F /IM RTSS.exe /T && rmdir /s /q "%temp%\Roblox"Are Windows system files corrupted or out of sync?
System file corruption in ntdll.dll is causing universal application faults.
Verify that third-party antivirus software is not sandboxing RobloxPlayerBeta.exe.
Prescribed Action:
Run Windows System File Checker and DISM restore:
sfc /scannow && DISM /Online /Cleanup-Image /RestoreHealth