Here we will share the details of the following Rainbow Six Siege Error Code 0-0x00001003.
According to users, the following error generally appears when there is a conflict between the game and a program installed and running on your systems.
Hence, the best way to solve the particular error would be to find an application or program incompatible with the Rainbow Six Siege game and uninstall that program to check and see if it can help solve the issue.
Below, we have listed a few such solutions that users have tried on their own and found to be useful in fixing the following 0-0x00001003 error on their respective systems.
Fixes For Rainbow Six Siege Error Code 0-0x00001003
Fix 1: Disable Firewall And Antivirus Service
Quite a few users have reported that disabling their Antivirus service or app has helped get rid of the following error message.
We suspect that the following error turns up when some file within the game is not allowed to run by the Antivirus service or app running in the background.

Hence, to disable your Antivirus app or service you can follow the steps shown below:
- Launch your Antivirus app.
- Head to the Settings option and select the Firewall option from there.
- Under the Firewall option pane, disable your Firewall by toggling off the option under Firewall.
- Lastly, click on the Apply button to save the settings and check if the error still persists.
It is important to note that the above steps might differ from one type of Antivirus program to the other. Hence, if you are unable to find the options listed in the steps above. Then, it would be best to search for the steps on your own for the particular Antivirus service or app you are using on your device.
Fix 2: Reinstall BattleEye launcher app
If you are using the BattleEye launcher app on your PC. Then, that might act as the reason for the following error to occur, due to an outdated app file or a corrupted program file.
To fix such an issue arising from such corrupted program files, uninstalling and reinstalling the app fresh might help in fixing the error message.
Fix 3: Run A Clean Boot
Running a clean boot allows you to run your system using a very minimal set of drivers, enabling you to check and determine which background program might be interfering with your game running properly.

Hence, to run a clean boot on a Windows System, you can follow the steps as shown below:
- Head to your Windows Search bar and type in msconfig.
- Then, from the results, select the System Configuration app and launch it.
- From the Service Configuration page, select the Services tab and uncheck the box for Hide all Microsoft services at the bottom.
- Next, click on the Disable All button on the right-hand side and click on OK to save the changes.
- To pinpoint which app is in conflict or interfering with the game, you can head to the Startup tab. Then, by going to the Open Task Manager option, enable and check the apps one by one to see which app is causing the problem.
- Just keep in mind to make a note of which app you have disabled and enabled henceforth to enable necessary apps later on.