Other factors—such as corrupted game files, insufficient permissions, or a slow/unstable internet connection—can also cause this error. Now that you know the likely causes, let’s walk through the solutions.
1. Check Server Status
Before trying any fixes, it’s a good idea to check if the issue is caused by a server outage. Sometimes, this error can occur simply because Ubisoft’s servers are temporarily down or undergoing maintenance. Verifying the server status helps you determine whether the problem is on your end or with Ubisoft. You can check the server status on Ubisoft’s official website.
2. Run as Administrator
This error can sometimes occur due to insufficient system permissions. Running the game as an administrator ensures it has full access to the files, services, and system-level permissions it needs to function properly—especially when initializing components like BattlEye. Right-click the game’s shortcut and select “Run as administrator” to see if this resolves the issue.
3. Verify Game Files
Corrupted or missing game files can prevent the game from running properly, especially if essential files fail to load. This can lead to errors like 0-0x00000001. Verifying the game files will scan for any damaged or missing data and automatically re-download the necessary files, which may help resolve the issue.
4. Turn Off Antivirus
Temporarily turning off your antivirus software can help resolve this error, as some antivirus programs may interfere with the game or the BattlEye anti-cheat service. This conflict can prevent the game from initializing properly. Disabling your antivirus stops it from blocking or restricting essential processes, which may allow the game and anti-cheat to function without interruption. Note: This is just a temporary troubleshooting step. Be sure to re-enable your antivirus afterward or add Rainbow Six Siege and BattlEye to your antivirus exclusion list.
