Rainbow Six Siege error code 3-0x00001000 is an error that usually occurs due to internet connection issues or the inability to update the servers automatically.
Some of the solutions to this error include checking for game maintenance and checking your network settings.
Please see our in-depth walk-through solutions below.
The Rainbow Six Siege could be undergoing maintenance which results in error code 3-0x00001000. Check for server maintenance by going to their official Facebook account. If they are under maintenance, please wait. In addition, update your Rainbow Six Siege after the maintenance.
If the server is and the error still exists, please see below.