MTG Arena Error Updating Data | Recommended Fixes

The “Error Updating Data” in MTG Arena is a common and frustrating issue for players. It generally indicates that the game client is having trouble connecting to the update servers or that there’s a problem with local game files.

⚠️ What Causes the Error?

This update error is most often triggered by network misconfigurations or interferences like:

• Proxy or VPN interference

• IPv6 connectivity conflicts or DNS issues

• Special characters in your device name (on PC or mobile)

• Third-party tools (like deck trackers) blocking the client

• Corrupted client installation or lingering files

• ISP restrictions or regional update rollout issues

Also Read : Proxy Error 408 Janitor AI | Steps to Fix It

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✅ Recommended Fixes

1. Disable Windows Proxy (or macOS Proxy)

On Windows:

• Close MTG Arena completely.

• Go to Settings → Network & Internet → Proxy.

• Turn off:

  • Automatically detect settings

  • Use setup script

  • Use proxy server

• Relaunch the game and wait for the update to complete.

On Mac:

• Open System Preferences → Network → Advanced → Proxies.

• Disable all proxy options unless needed, or enable only automatic discovery if required.

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2. Disable IPv6 / Change DNS

Users have reported that IPv6 can interfere with MTG Arena updates:

• Open Control Panel → Network & Internet → Network Connections.

• Right‑click your active adapter → Properties.

• Uncheck Internet Protocol Version 6 (TCP/IPv6).

• Optionally, set DNS to public servers like 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).

• Restart your PC and retry.

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3. Rename Your Device (PC or Mobile)

Some users found that non-English or special characters in their PC/device name caused this bug:

• Rename your system name to use only ASCII letters, numbers, or hyphens (e.g., MyDesktopPC, not ChloésLaptop).

• Reboot your device before launching Arena again.

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4. Uninstall Third‑Party Trackers

Tools like MTGA Assistant have been reported to break updates:

• Temporarily uninstall any deck tracker or overlay tools (MTGA Assistant, MTG Arena Pro, etc.).

• Relaunch MTG Arena to check if update proceeds.

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5. Flush DNS, Winsock, or Clean Uninstall

If nothing else helps:

• Flush DNS: ipconfig /flushdns

• Reset Winsock: netsh winsock reset

• Uninstall MTG Arena using a cleanup tool (e.g. Revo Uninstaller) to remove all residual files and registry entries.

• Reinstall the game from Wizards website, Steam, or the Epic Games Launcher.

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6. Use a VPN or Alternate Launcher

If your ISP blocks or throttles connections:

• Try connecting via a VPN (e.g., ExpressVPN).

• Alternatively, switch platforms: uninstall and reinstall MTG Arena via the Epic Games Launcher, which sometimes resolves update issues.

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🧠 Summary Checklist

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💬 What Players Are Saying

“Change your device name to not use characters outside the English alphabet … Disabling IPv6 on Windows 10/11 devices are also known to fix the issue.”

“Disabled IPv6 on Windows 10/11, instantly fixed”

“Flush DNS and winsock reset… aka cleared the registry and reinstall with Revo Uninstaller.”

If all else fails:

• Contact MTG Arena Support: If you’ve tried everything above and still face the error, submit a detailed support ticket to Wizards of the Coast customer service. Provide screenshots of the error, details of what you’ve tried, and any relevant log files.