Rainbow Six Siege Error Code 3-0x0001000B: How to Fix It

Easy 15-45 minutes Medium Severity Verified June 2026
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Error Code
3-0x0001000B
Brand
Popular Games
Product Type
game
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-45 minutes
Error code 3-0x0001000B in Rainbow Six Siege means your game has lost its connection to Ubisoft's game servers. This can happen due to local network issues, Ubisoft server outages, corrupted game files, or NAT type problems on your router. In most cases, you can resolve this yourself in under 30 minutes by working through a few simple troubleshooting steps.
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Tools You'll Need

How to Fix Error Code 3-0x0001000B

  1. Check Ubisoft Server Status

  2. Restart the Game and Your Platform

  3. Restart Your Router and Modem

  4. Switch to a Wired (Ethernet) Connection

  5. Check and Open Your NAT Type

  6. Flush DNS Cache and Use a Public DNS (PC)

  7. Verify or Repair Game Files (PC)

  8. Temporarily Disable Firewall and Antivirus (PC)

    Only disable your firewall temporarily for testing purposes. Re-enable it immediately after testing and add permanent exceptions instead of leaving protection off.

  9. Update Network Adapter Drivers (PC)

  10. Reinstall Rainbow Six Siege

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When to Call a Professional

If you have tried all steps above and the error persists only on your network but other games work fine, contact your Internet Service Provider (ISP) — they can check for routing issues or packet loss between your connection and Ubisoft's servers. If you suspect your router is malfunctioning (multiple devices have connectivity issues), consider contacting your ISP or a network technician. For persistent in-game issues unrelated to your network, open a support ticket directly with Ubisoft at help.ubisoft.com.

Frequently Asked Questions

What does Rainbow Six Siege error code 3-0x0001000B mean?
Error 3-0x0001000B means Rainbow Six Siege has lost its connection to Ubisoft's game servers. It can be caused by a server outage on Ubisoft's side, a problem with your home network, a strict NAT type, or corrupted game files on your device.
Is error 3-0x0001000B a Ubisoft server issue or my fault?
It can be either. Always check the Ubisoft server status page at help.ubisoft.com first. If servers are online and other players are not reporting issues, the problem is likely on your end — usually your network, NAT type, or game files.
Why do I keep getting disconnected from Rainbow Six Siege servers?
Repeated disconnections in Siege are most often caused by a strict or moderate NAT type, Wi-Fi instability, ISP routing problems, or your firewall/antivirus blocking the game. Switching to a wired connection and opening your NAT via UPnP or port forwarding resolves this for most players.
How do I fix error 3-0x0001000B on PS4 or PS5?
On PlayStation, start by checking Ubisoft server status, then restart your console and router. Go to Settings > Network > View Connection Status and check your NAT Type — it should be Type 2. If it shows Type 3 (strict), log into your router admin panel and enable UPnP, or set up port forwarding for the PlayStation Network and Rainbow Six Siege ports.
Will reinstalling Rainbow Six Siege delete my progress?
No. Your rank, operator unlocks, and progression are saved to Ubisoft's servers and tied to your Ubisoft Connect account. Reinstalling the game on PC or console will not delete your in-game progress. You may need to reconfigure your in-game graphics and keybind settings after reinstalling on PC.

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