7 Ways to Fix Rainbow Six Siege X Not Launching on a Windows PC

Tom Clancy’s Rainbow Six Siege X is a new, revamped RSS game, which is freely available. However, some players report that this new RSSX game title doesn’t start on their PCs. For instance, one player’s Reddit post says, “I’ve been playing Tom Clancy’s Rainbow Six Siege without any issues until recently. After installing Siege X, the game crashes immediately on startup and shows the ‘Oh no, it crashed!’ error message through Ubisoft Connect.” This is how you can fix Rainbow Six Siege X not launching on a Windows PC.

Verify Rainbow Six Siege X

First, try the verification of game files troubleshooting method to fix Rainbow Six Siege X not launching. Some players confirm running a Steam verification scan for RSSX has kick-started the game for them. To apply this possible resolution, go through the steps outlined on this Steam verify page.

Verify integrity option

Reinstall BattlEye

BattlEye is anti-cheat software for the RSSX game. Reinstalling BattlEye is currently among the most widely confirmed ways to fix Rainbox Six Siege X not launching on Windows PCs. These are the steps for reinstalling BattlEye via Steam:

1. Open the Steam gaming client and its Library tab.
2. Right-click the Rainbow Six Siege X game in the sidebar to select Manage > Browse local files.
3. Open the BattlEye subfolder from Tom Clancy’s Rainbow Six Siege X folder.
4. Double-click the Uninstall_BattlEye.bat file.
   
   

   The Uninstall_BattlEye.bat file

5. Click Yes > OK to confirm.
6. Next, double-click the Install_BattlEye.bat file.

Close the MSI Afterburner and RivaTuner Background Apps

A few players have said that they could fix Rainbow Six Siege X not launching by closing the MSI Afterburner and RivaTuner background apps. Do you have those overclocking apps on your PC? If so, try closing MSI Afterburner and RivaTuner before starting RSSX with the Task Manager like this:

1. Simultaneously press the Ctrl + Shift + Esc key to access Task Manager.
2. Look for MSI Afterburner and RivaTuner in the Processes tab.
3. Right-click MSI Afterburner and RivaTuner to select End task.

The End task option

Delete the GameSettings File

If you fiddled around with in-game RSSX settings previously, and the game doesn’t start thereafter, that might have caused some startup issues. Erasing the GameSettings file for RSSX will restore the game’s settings to default. This is how you can delete the GameSettings file:

1. Open File Explorer and the Documents > My Games > Rainbow Six – Siege folder.
2. Next, open the folder with random characters (letters and numbers) from the Rainbow Six – Siege directory.
3. Right-click the GameSettings file to select Delete.

The GameSettings file

Turn Off the Overlay in Discord

Is Discord installed on your PC? If so, try turning that software’s overlay feature off to fix Rainbow Six Siege X not launching. This overlay page on the Discord support site tells you how users can turn off the Enable Overlay setting.

The Enable in-game overlay setting

Opt-Out of the Steam Beta

It has been confirmed on Steam’s forum that selecting No beta chosen for the Beta Participation setting can sometimes fix Rainbow Six Siege X not launching. Do you opt into Steam beta participation? If so, try selecting the No beta chosen setting. This Steam page tells you how users can access the Client Beta Participation drop-down menu to apply this possible fix.

The No beta chosen option

Manually Update the Steam Client

Manually updating the Steam client has also fixed Rainbow Six Siege X not launching for some players. Steam includes an option you can select to check for client updates. This is how you can manually update Steam:

1. Bring up your Steam software window.
2. Click on the Steam menu.
3. Select the Check for Steam Client Updates option on the menu.
   
   

   The Check for Steam Client Updates option

4. If there is an update available, select the option to install it.

Other Possible Ways to Fix Rainbow Six Siege X Not Launching

There are numerous other potential ways to fix Rainbow Six Siege X not launching that might work for some users. Try applying these extra fixes for RSSX not starting if you need to:

• Set a -DX11 launch option for Rainbow Six Siege X in Steam.
• Select to run Rainbow Six Siege X as an administrator from its folder.
• Try starting the game from its Ubisoft Connect launcher, rather than utilizing Steam.
• Select to clear Steam’s download cache, as outlined on the Valve support page.
• Add the Rainbow Six Siege X EXE game file to your antivirus and firewall exclusion lists.

The ways to fix Rainbow Six Siege X not launching above have worked for some players. So, there’s a decent chance that applying some of those possible fixes could kick-start RSSX on your PC as well. You can also click Contact Us on this RSSX help page to ask the game’s support service for more potential fixes.