The error code diceonlineerror_unknown is the specific technical ID for the “Unknown Error” in Battlefield 6. It technically means there is a “Handshake Failed” state: your game client thinks you are online and ready, but the EA/DICE server does not recognize your session token.
This is why you often get kicked back to the menu rather than crashing to the desktop.
Here are the specific fixes for this exact error code, ordered by success rate:
1. The “Verify Integrity” Fix (Most Effective)
This error is most often caused by a single file mismatch between your PC/Console and the server.
Steam: Right-click Battlefield 6 in your Library > Properties > Installed Files > Verify integrity of game files.
EA App: Click “Manage” on the game tile > Repair.
Xbox/PS5: There is no direct “verify” button, so a full system restart (power cycle) is the closest equivalent. If that fails, re-installing the specific “content packs” (under “Manage Game Content”) can force a re-sync.
2. Force a Session Refresh
Since this is a token error, you need to force the server to issue you a new ID.
Close the game.
Log out of the EA App (or Steam/PlayStation Network/Xbox Live).
Restart your device.
Log back in.
Note: Simply closing the game window is often not enough; you must log out of the launcher/network to kill the “zombie” session.
Also Read : Nintendo Switch 2 Black Friday
3. Clear the EA App Cache (PC Only)
If you are on PC, a corrupted cache is a frequent culprit for this specific code.
Open the EA App.
Click the three dashes (top left corner).
Go to Help > App Recovery.
Click Clear Cache.
4. DNS Flush (If it persists)
If the above don’t work, your network might be caching an old route to the server.
PC: Open Command Prompt as Admin and type
ipconfig /flushdns.Consoles: Go to Network Settings and manually set your DNS to Google’s public DNS (Primary: 8.8.8.8, Secondary: 8.8.4.4).
Summary Checklist:
[ ] Verify Game Files (Do this first!)
[ ] Logout/Login to refresh session token.
[ ] Clear Cache (PC).
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