Rainbow Six Siege Error Code 2 0x0000c015 Fix

Error code 2 0x0000c015 in Rainbow Six Siege is a connection failure that usually appears when the game cannot reach Ubisoft’s servers, often due to a temporary outage, a corrupted cache, or a strict NAT type. The fix typically involves verifying game files, clearing the Ubisoft Connect cache, and adjusting your router’s NAT settings. Below is a detailed breakdown of what causes this error and the exact steps to resolve it.

What Does Error 2 0x0000c015 Mean?

This error code is part of Ubisoft’s generic connection error family (the “2” prefix indicates a network issue). The hexadecimal portion (0x0000c015) is an internal code that the game client uses to log the failure. In practice, players see this error when the game fails to establish a stable connection to the matchmaking or authentication servers. It can happen at launch, during matchmaking, or mid-game.

Common triggers include:

• Ubisoft server maintenance or an outage
• A temporary glitch in the Ubisoft Connect client
• Corrupted local game files or cache data
• Network restrictions (strict NAT, firewall, or ISP blocks)
• Outdated game or client version

First Steps: Check Server Status and Restart

Before changing any settings, confirm that the problem isn’t on Ubisoft’s side. The official Ubisoft server status page (status.ubi.com) shows live health for each platform. If servers show downtime or partial issues, wait and retry later—there’s nothing you can do locally.

If servers are up, perform a clean restart of both the game and the client:

1. Close Rainbow Six Siege and Ubisoft Connect completely (check the system tray for background processes).
2. Restart your PC or console.
3. Launch Ubisoft Connect, then start the game.

This clears temporary memory conflicts that often cause intermittent connection errors.

Clear the Ubisoft Connect Cache

A corrupted cache is a frequent culprit for error 2 0x0000c015. The cache stores temporary data for game updates and logins, and if it gets corrupted, connections fail. Clearing it forces the client to rebuild it.

On PC (Ubisoft Connect):

1. Close Ubisoft Connect completely.
2. Press Windows + R, type %ProgramData% and press Enter.
3. Delete the Ubisoft Game Launcher folder (this removes cache and logs, not your games).
4. Also navigate to %AppData% (type it in the Run dialog) and delete the Ubisoft Game Launcher folder there.
5. Restart your PC and relaunch Ubisoft Connect.

On console (PS4/PS5, Xbox):

• Power cycle the console (turn it off, unplug for 30 seconds, then restart).
• Re-download your profile or re-link your Ubisoft account if the error persists.

Verify Game Files

Missing or corrupted game files can also trigger this error. Ubisoft Connect has a built-in verification tool that checks and repairs files automatically.

1. Open Ubisoft Connect and go to the Games tab.
2. Select Rainbow Six Siege, click the Properties icon (the gear or three dots).
3. Choose Verify files (or “Verify game files” on some versions).
4. Wait for the process to finish—it may take several minutes.
5. Launch the game again.

This step also ensures your game is fully updated, as outdated versions sometimes cause connection mismatches with the server.

Fix Network and NAT Issues

If the error persists, your local network might be blocking the connection. Rainbow Six Siege requires certain ports to be open, and a strict NAT type can prevent matchmaking.

First, check your NAT type in the game’s settings (Options → Gameplay → Matchmaking). If it shows “Strict” or “Moderate,” try these fixes:

• Enable UPnP on your router (usually found in the router’s admin page under Network or Advanced settings).
• Port forward the following ports to your PC or console’s IP address:
  UDP: 3074, 6015, 9100
  TCP: 80, 443, 13000, 14000, 14001, 14002, 14003, 14004, 14005
• Set a static IP for your device so the port forward doesn’t break on restart.
• If you use a VPN, disable it—VPNs often interfere with game connections.

If you’re on a college or office network, the admin may need to open these ports. You can also try using a mobile hotspot to test if the issue is with your ISP.

Reinstall the Game (Last Resort)

If none of the above works, a full reinstall can eliminate any deeply corrupted files. This is time-consuming but often resolves stubborn connection errors.

1. Uninstall Rainbow Six Siege via Ubisoft Connect (right-click the game → Uninstall).
2. Restart your PC.
3. Reinstall the game from Ubisoft Connect.

Before reinstalling, note that your settings and progress are saved on Ubisoft’s servers, so you won’t lose anything except local configurations.

Frequently Asked Questions

Q: Does error 2 0x0000c015 happen on console too?
A: Yes, it can occur on PlayStation and Xbox, though less commonly. The fixes are similar: restart the console, clear the cache (via power cycle), and check the server status. Port forwarding is usually not needed on consoles if UPnP is enabled.

Q: Will I get banned for this error?
A: No. This is a connection error, not a violation of Ubisoft’s terms. It doesn’t trigger any ban or penalty. You can safely troubleshoot without worrying about account actions.

Q: Why does it happen only during peak hours?
A: High server load during peak times can cause temporary connection failures. If you only see the error in the evening, it’s likely server congestion. Check the server status page and try again later.

Q: Can my ISP cause this error?
A: Yes. If your ISP uses carrier-grade NAT (common with mobile hotspots or some rural ISPs), you might have a strict NAT that blocks the game. Contact your ISP to ask for a public IP or use a VPN (though VPNs can also cause issues).

Q: Is there a way to prevent this error in the future?
A: Keep the game and client updated, avoid using VPNs, and ensure your router’s UPnP is enabled. Regularly clearing the cache (once a month) can also prevent corruption.

Q: What if the error still appears after all these steps?
A: If you’ve tried everything and the error persists, it’s almost certainly a server-side issue. Contact Ubisoft Support with your error code and platform; they can check your account for any blocks and provide region-specific advice.

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