8 Ways To Fix Rainbow Six Siege Crashing [2021]

If you have been consistently facing issues and getting frustrated about Rainbow Six Siege Crashing on PC either on startup and during gameplay as well, then this is where you will find all the answers. Rainbow Six Siege has emerged as one of the leading first-person shooter titles in recent years. Its high-stakes competitive gameplay involving close-quarters engagements, dynamic environments and immeasurable potential for strategic execution has led to some truly heart-pounding gameplay moments for so many. The fact that the game crossed a whopping 200,000 concurrent players on Steam in March 2021 is a testament to the fact that the game is still active with a massive player base.

However, if there is one thing Siege players would most likely associate with the game, it would be its consistent challenges with game-breaking bugs, crashing, errors and glitches. After all, who could forget recurring issues such as invisible player models, glitched spectator or kill cams, and even the infamous Raptor Legs bug. The issue had become so prevalent that the developers initiated the R6Fix program where players were invited to share and discuss technical issues with the game. Due to such efforts, the game is arguably in a better state today than it had been at any point during its past. Nevertheless, new bugs and glitches are still a regular occurrence with Rainbow Six Siege updates.

How To Fix Rainbow Six Siege Crashing on PC

The error of Rainbow Six Siege crashing on PC, even on startup, has also been among the game’s longstanding issues. For many players, the crash may also take place while searching for a game, or even during a game itself. Your woes end here, though, because we have scoured the internet to come up with the best solutions to this game-breaking issue. So, if you have been experiencing Rainbow Six Siege PC crashes, on startup or during gameplay, then this guide will take you through some verified fixes that are sure to help you get back into the game!

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Verify integrity of game files

Corrupted game files can be the most likely culprit of regular crashes in Rainbow Six Siege on PC. Thankfully, these files can easily be repaired using built-in tools for both Steam and Ubisoft Connect versions of the game.

Steam

  1. Open your Steam client and go to the Library
  2. Once here, find Tom Clancy’s Rainbow Six Siege in your list of games.
  3. Right-click on the game, and select Properties.
Rainbow Six Siege Keeps Crashing on Startup PC
Go to Properties
  1. Afterward, select Local Files from the list on the left.
  2. Here, you will see an option named Verify integrity of game files. Click on it.
Rainbow Six Siege Keeps Crashing on Startup PC
Verify integrity of game files

Ubisoft Connect

  1. Open your Ubisoft Connect client, and click on the Games tab located near the top-left of the window.
  2. Among the Installed section, look for Tom Clancy’s Rainbow Six Siege.
  3. Click on the game icon, which will open up another page.
  4. Here, select Properties from the list on the left.
  5. In the Local Files section, select the Verify Files.
Verify files
Select ‘Verify files’

Now the Steam/Ubisoft Connect client will run a check of your game files, and any files found to be corrupted or missing will be redownloaded. The check may take a while owing to the large size of Rainbow Six Siege’s game files, but once it is completed, you should no longer experience the game crashing on your PC.

Update device drivers

Another reason behind frequent crashing of your copy of Rainbow Six Siege on PC can be outdated or incorrect device drivers, especially for your graphics card. Therefore, you should update your drivers by following the steps below.

  1. Open the Windows Start Menu, and type in Device Manager.
  2. Open the first option that appears. This should open a window showing the various devices being used by your PC.
Rainbow Six Siege Keeps Crashing on Startup PC
Open Device Manager
  1. Click on the small arrow next to Display adapters.
  2. Now, you should see a few more options listed below Display adapters. These correspond to your graphics card.
  3. Right-click on the name of your primary graphics card (usually the NVIDIA/AMD/Radeon one).
  4. Click on Update driver.
Rainbow Six Siege Keeps Crashing on Startup PC
Update drivers
  1. Subsequently, a driver update window will open up. From here, select the first option which is Search automatically for drivers.

Now let the wizard run as it searches for any driver updates available on the web.

Additionally, you can also perform this driver update through programs like NVIDIA GeForce Experience and AMD Radeon Software, depending on which graphics card you have. Moreover, you can use a third-party software such as Driver Easy Free to easily check and update all of your PC’s drivers.

Once your device drivers are updated and ready to go, restart your PC. This should fix any crashing issues you were having with Rainbow Six Siege on PC, whether on startup or in-game.

Also Read: Valorant Error Code Van 68 [Solved]

Add exception in Windows Firewall

Network issues faced by Rainbow Six Siege can also be a likely cause behind your game crashing frequently. This can be caused by your Windows Firewall inadvertently blocking out your game’s internet traffic, preventing it from communicating with Ubisoft servers. However, this issue can be subverted by adding the game to your Firewall exceptions.

  1. Open the Windows Start Menu, and search for Windows Defender Firewall.
  2. Click on the first option.
Open Windows Defender Firewall
Open Windows Defender Firewall
  1. On the window that opens, look at the options on the left and click on Allow an app or feature through Windows Defender Firewall.
Rainbow Six Siege Keeps Crashing on Startup PC
Select ‘Allow an app or program through Windows Defender Firewall’
  1. You should subsequently see a list of programs that are allowed to bypass any Firewall restrictions. If this list appears greyed out, click on the Change settings in the top-right.
  2. Afterward, click on the Allow another app…
Rainbow Six Siege Keeps Crashing on Startup PC
Select ‘Allow another app’
  1. From here, select Browse.
  2. Now, you need to find and select your game’s .exe file. To do so, you need to navigate to the game files folder.

For Steam, open the folder where your Steam games are installed, and then follow the path:

steamapps > common > Tom Clancy’s Rainbow Six Siege

You can similarly find the files for Ubisoft Connect depending on where you installed your game.

  1. Once here, select the file named RainbowSix.exe (or RainbowSix_Vulkan.exe if you use the Vulkan version of the game).
Select game launcher .exe
Select game launcher .exe
  1. Lastly, click on Add once you are taken back to the previous window.

This should fix any network issues with the game on your PC that may have been causing Rainbow Six Siege to crash.

Limit startup and background applications

This worked for my Rainbow Six Siege crashing – It is also possible that there are certain applications running on your PC in the background which hinder the working of Rainbow Six Siege, causing it to crash, even on startup. Some of these applications start up whenever you boot up Windows. To disable them, go through the following steps.

  1. Open the Windows Start Menu, and search for System Configuration.
  2. Click on the first option.
Rainbow Six Siege Keeps Crashing on Startup PC
Open System Configuration
  1. In the window that appears, within the General tab, enable the Selective startup option if it was not already, and uncheck the sub-option Load startup items. Doing so will stop any unnecessary third-party programs from starting whenever you boot Windows.
Rainbow Six Siege Keeps Crashing on Startup PC
Uncheck ‘Load startup items’
  1. Afterward, go to the Services tab, and check the Hide all Microsoft services This will leave only third-party services.
  2. Click on the Disable all.
'Hide all Microsoft services' and then 'Disable all'
‘Hide all Microsoft services’ and then ‘Disable all’
  1. Click on Apply and then on OK.
  2. Lastly, go to the Startup tab and click on Open Task Manager.
  3. Here you will see a list of applications that start whenever your PC loads up. For each application, right-click on it and select Disable.
Rainbow Six Siege Keeps Crashing on Startup PC
Disable startup programs

You have now successfully disabled all third-party startup programs and services. Restart your PC and launch Rainbow Six Siege again to see if the crashing issue has been resolved.

Additionally, you can also open the Task Manager to see if there are any third-party background processes that are using up too much resources such as CPU, GPU and RAM. If so, try ending the process (right-click on the process and select End task), or uninstalling the program completely. Once completed, run the game and see if the issue persists.

Run in Compatibility Mode

Another verified fix is to run the game in Compatibility Mode. This fix is only applicable if you are running the game on Windows 10, though.

  1. Find the game launcher .exe file or a shortcut file.
  2. Right-click on the file and select Properties.
  3. Once here, go to the Compatibility tab and check the option Run this program in compatibility mode for.
  4. From the drop-down menu below, select Windows 7.
Rainbow Six Siege Keeps Crashing on Startup PC
Select Compatibility Mode for Windows 7
  1. Click on Apply, and then on OK.

Try launching the game again, and see if the issue still persists.

Disable fullscreen optimizations

This is another fix can occasionally fix crashes during startup and in-game for Rainbow Six Siege on PC.

  1. Find the game launcher .exe file or a shortcut file.
  2. Right-click on the file and select Properties.
  3. Once here, go to the Compatibility tab and check the options Disable fullscreen optimizations and Run this program as an administrator.
Disable fullscreen optimizations and run as administrator
Disable fullscreen optimizations and run as administrator
  1. Click on Apply, and then on OK.

Give the game another go, and see if the crashing has been fixed.

You may also be interested in our error fix guide on Apex Legends Engine Error.

Disable in-game overlay

Players have also reported issues with the in-game Ubisoft overlay to be the cause of Rainbow Six Siege’s frequent crashing on startup. To fix this, you can try disabling the overlay along with other support features such as cloud saves.

  1. Open your Ubisoft Connect
  2. Click on the three lines icon in the top-left, and go to Settings.
  3. In the General section, uncheck the two options titled Enable cloud save synchronization for supported games and Enable in-game overlay for supported games.
Rainbow Six Siege Keeps Crashing on Startup PC
Disable cloud saves and in-game overlay

Lastly, exit and reopen the Ubisoft Connect client, and try relaunching Rainbow Six Siege to see if the issue has been fixed.

Limit framerate

If all else fails to fix your issue of Rainbow Six Siege crashing on your PC, you can try limiting your in-game framerate. Unlocked framerates can lead to excessive CPU and GPU usage. Though this is usually not a problem with most games, some people can face crashing issues with Rainbow Six Siege. Therefore, we recommend limiting your framerate to a value slightly below the maximum FPS that you can achieve in game. For example, if your system can push 160 frames per second at best in the game, we recommend limiting your framerate to 140. You can do so by following these steps.

  1. Open up the Windows File Explorer, and go to the Documents
  2. From here, navigate to My Games, and then to Rainbow Six – Siege.
  3. Open the folder located here with the long alphanumeric name.
  4. Open the file GameSettings.ini with a text editor like Notepad.
Rainbow Six Siege Keeps Crashing on Startup PC
Open GameSettings.ini
  1. In the DISPLAY settings, find the FPSLimit setting, and set it to your decided framerate. For example, if you decided the maximum FPS to be 140, make sure that the text line reads FPSLimit=140.
Rainbow Six Siege Keeps Crashing on Startup PC
Enter desired framerate limit

This may give a slight performance setback, but it should lead to a much smoother experience. Moreover, if you choose an appropriate framerate limit, then the performance setback is insignificant and should not be noticeable by most players.

Want to hit better framerates in Rainbow Six? Check out our Rainbow Six Siege Settings guide!

Takeaways

That wraps up our list of fixes for the infamous Rainbow Six Siege crashing on startup for PCs issue. Did the guide help you get rid of the issue and jump back into the game? Give us your feedback in the comments down below. If you enjoy Rainbow Six Siege, be sure to check out our list of the 10 best FPS games you must play!

Frequently Asked Questions

How can I stop Rainbow Six Siege from crashing on PC?

This is a common issue among players. Some verified fixes include verifying integrity of game files, updating drivers, adding exception to Windows Firewall, limiting background tasks, running in compatibility mode, disabling in-game overlays and fullscreen optimizations, and locking the framerate.


Sulaymaan Ahmad


A prospective engineer with a long-standing love for competitive multiplayer shooters and narrative-driven experiences. When not sharing his meme-filled thoughts on Facebook, he can be found rocking Buck or Smoke in Rainbow Six Siege.
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