Rainbow Six Siege Crash Fix: Why It Keeps Crashing

Updated 14 November 2026 · Standard formula, shown below

If Rainbow Six Siege keeps crashing with an error or freezing to desktop, the cause is usually a driver conflict, corrupted game files, or an unstable overclock, and the fix is a combination of updating drivers, verifying files, and disabling overlays. This article explains the most common crash triggers and gives step-by-step fixes you can try in order, from least to most invasive.

Why Rainbow Six Siege Crashes

Rainbow Six Siege is a live-service tactical shooter that has been updated for years, and crashes can come from many sources. The most frequently reported causes are:

Outdated or corrupted GPU drivers – especially after a Windows update or a new game patch.
Corrupted game files – a partial download or a failed update can leave files that crash the game on launch or mid-match.
Overlays and third-party software – Discord, GeForce Experience, MSI Afterburner, and similar tools can conflict with the game’s anti-cheat (BattlEye).
Unstable overclocks – CPU, GPU, or RAM overclocks that are stable in benchmarks can still crash a game that uses the hardware differently.
Insufficient memory or VRAM – Siege is not very demanding, but a system with too little RAM or a GPU with small VRAM can crash on higher settings.
BattlEye anti-cheat issues – the anti-cheat service can fail to start or be blocked by antivirus, causing a crash at launch.

How to Fix Crashes in Rainbow Six Siege

Work through these steps in order. Test the game after each one to see if the crash is gone.

Restart your PC and close background apps. This clears temporary glitches and frees memory. Close Discord, browsers, and any overlay software before launching Siege.
Update your GPU drivers. Go to the NVIDIA, AMD, or Intel driver page (depending on your graphics card) and download the latest driver. Use the “clean install” option if available. If you just updated and crashes started, try rolling back to the previous driver.
Verify the game files. In Ubisoft Connect, go to your game library, right-click Rainbow Six Siege, choose “Verify files”. This checks every game file and re-downloads any that are broken. In Steam, right-click the game, go to Properties → Local Files → “Verify integrity of game files”.
Disable overlays. Turn off the in-game overlay in Ubisoft Connect (Settings → General → “Enable in-game overlay for supported games”), and also disable Discord overlay, GeForce Experience overlay, and any other overlay you have.
Run the game as administrator. Right-click the game shortcut and select “Run as administrator”. This can help if the game can’t write to its own folders.
Set the game to run in compatibility mode. Right-click the executable (usually RainbowSix.exe in the game folder), go to Properties → Compatibility, and try “Windows 8” or “Windows 7” mode. This helps on some older systems.
Remove overclocks. If you overclocked your CPU, GPU, or RAM, set everything back to stock speeds and test. If the crash stops, your overclock is unstable for Siege.
Reinstall BattlEye. In the game folder, there is a BattlEye folder. Run the Install_BattlEye.bat file as administrator. This re-installs the anti-cheat and can fix launch crashes.
Reinstall the game. If nothing else works, uninstall and reinstall. This is the most complete fix but takes the longest.

Common Crash Messages and What They Mean

Siege crashes can show different errors. Here are the ones players see most often:

“Rainbow Six Siege has stopped working” – a generic Windows error. Usually a driver or file corruption issue.
“Error code [0x00000000]” – often related to BattlEye failing to start. Reinstall BattlEye and check antivirus exclusions.
“Out of video memory” – your GPU doesn’t have enough VRAM for the current settings. Lower texture quality and render scaling.
“Fatal error” – can mean a missing or corrupted file. Verify files first.
Freeze then crash to desktop without any message – usually an overclock, overheating, or a driver timeout.

How to Prevent Crashes in the Future

Once you have a stable game, a few habits reduce the chance of crashes coming back:

Keep drivers updated – but not necessarily on day one of a new driver release; wait a few days and check forums for issues.
Don’t run too many background apps – especially those with overlays.
Keep your system cool – clean dust from fans, make sure your case has good airflow. Overheating can cause random crashes.
Set a reasonable frame limit – if your GPU is running at 100% for hours, it can get very hot. Capping at 144 FPS is fine for most monitors.
Check Windows updates – but be aware that a Windows update can sometimes break a game, so if crashes start after an update, roll back the update or check for a game patch.

Comparing Siege Crashes with Other Games

Rainbow Six Siege is not unique in having crashes, but it has a few quirks. Unlike single-player games, Siege uses BattlEye anti-cheat, which can conflict with other software. Also, because it is an online game, any network issue can cause a disconnect that looks like a crash. If you only crash in Siege and not in other games, the problem is likely specific to Siege or BattlEye. If you crash in many games, the issue is more likely your hardware or drivers.

When to Seek More Help

If you have tried all the steps above and still crash, the issue might be a rare hardware fault or a conflict with a specific piece of software. In that case, you can:

Check the official Ubisoft support forums for known issues with the current patch.
Search for your specific error message plus “Siege” to see if others have found a workaround.
Test your RAM with a tool like Windows Memory Diagnostic (run mdsched.exe from the Start menu).
Test your GPU with a stress tool like FurMark (but be careful, it can overheat a weak card).
Contact Ubisoft support directly with your system specs and the crash log.

Frequently Asked Questions

Why does Rainbow Six Siege crash on startup?

Startup crashes are often caused by BattlEye failing to load or by corrupted game files. Run the game as administrator, verify files, and reinstall BattlEye. Also, make sure your antivirus is not blocking the game or BattlEye.

Does Rainbow Six Siege crash more than other games?

Not necessarily, but because it is a competitive online game, crashes are more noticeable and frustrating. Many crashes are due to third-party software conflicts or driver issues that affect any game. Siege’s anti-cheat adds one more layer that can cause issues.

Can a bad internet connection cause crashes?

No, a bad connection will cause disconnects and lag, not a crash to desktop. If you are disconnected from a match, you will see an error message, but the game itself should not close.

Will reinstalling the game fix all crashes?

Reinstalling fixes crashes caused by corrupted files, but not crashes caused by drivers, overclocks, or hardware faults. It is the most thorough fix for file-related issues, but try the other steps first because it takes time.

Is there a way to see why the game crashed?

Yes. Windows Event Viewer (type “Event Viewer” in the Start menu) shows application errors. Look under “Windows Logs → Application” for events with source “Application Error” that mention RainbowSix.exe. The error code can help identify the cause, but it often points to a driver or memory issue.

Should I lower my graphics settings to stop crashes?

If you are getting “out of video memory” errors or crashes in intense moments, lowering texture quality and render scaling can help. But if the crash happens even on low settings, it is not a VRAM issue.

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