Redfall, the immersive co-op vampire shooter from Arkane Studios, has captivated players with its open-world action. However, many encounter the dreaded “Arknet Connection Lost, Incompatible Build” error, blocking access to multiplayer sessions and progress. This issue typically arises from version mismatches between your game client and Arknet servers, incomplete updates, corrupted files, or network hiccups.
Whether you’re on PC (Steam, Epic Games Store, Xbox app) or Xbox Series X|S, this guide provides step-by-step solutions drawn from player reports and official troubleshooting methods. We’ll start with quick fixes and escalate to advanced recovery options, ensuring you minimize downtime.
Understanding the Arknet Connection Lost Error
Arknet is Redfall’s backend service handling multiplayer matchmaking, progress syncing, and anti-cheat. The “Connection Lost” message paired with “Incompatible Build” signals that your game version doesn’t align with server expectations. Common triggers include:
- Pending or stalled game patches.
- Corrupted local files from crashes or interrupted downloads.
- Temporary server outages or maintenance.
- Unstable internet disrupting authentication.
- Platform-specific launcher glitches.
Player forums confirm this affects both solo and co-op modes due to Redfall’s always-online requirement, even for single-player. Addressing it promptly restores full access.
Essential First Steps: Verify and Update Your Game
Most cases resolve by ensuring your Redfall installation matches the latest build. Here’s how to check and apply updates platform-by-platform.
On PC via Steam
- Launch Steam and navigate to your Library.
- Right-click Redfall and select Properties.
- Go to the Downloads tab; pause/resume any queued updates.
- Switch to Local Files and click Verify integrity of game files. Steam will scan, repair, or download missing patches.
This process often uncovers hidden updates or fixes corruption in minutes.
On PC via Epic Games Store
- Open Epic Games Launcher and select Library.
- Click the three dots under Redfall and choose Manage.
- Select Verify to scan and restore files.
Epic’s tool efficiently handles launcher-specific stalls.
On PC via Xbox App (Game Pass)
- Close Redfall and Xbox app completely.
- Reopen Xbox app; it should prompt for additional assets or updates.
- If not, search for Redfall, select it, and check for updates manually.
On Xbox Series X|S
- Highlight Redfall in My Games & Apps.
- Press the Menu button and select Manage game and add-ons.
- Under Updates, install any available patches.
Consoles auto-update by default, but manual checks bypass delays.
Network and Restart Troubleshooting
If updates don’t help, network issues or temporary glitches may be at fault.
- Test Internet Stability: Run a speed test (aim for <50ms ping, stable download). Restart your router/modem. Switch to wired Ethernet if on Wi-Fi.
- Restart Game and Device: Fully exit Redfall, reboot PC/console. This clears caches and refreshes connections.
- Flush DNS (PC Only): Open Command Prompt as admin, type
ipconfig /flushdns, thennetsh winsock reset. Restart PC.
These steps resolve 70% of connection drops reported by players.
Advanced Fixes: Reinstall and Clear Cache
For persistent errors:
| Platform | Steps | Expected Time |
|---|---|---|
| Steam/Epic/Xbox App | Uninstall Redfall > Restart device > Reinstall from launcher | 30-60 mins |
| Xbox Console | Manage game > Uninstall > Restart console > Re-download | 45-90 mins |
Reinstallation replaces all files, eliminating deep corruption. Back up saves via cloud (Xbox Live or Bethesda account).
Disable VPN/Firewall Temporarily: Third-party security software can block Arknet ports. Add exceptions for Redfall executables.
Server Status and Community Insights
Occasionally, the error stems from Bethesda/Arkane server downtime for patches or hotfixes. Check official channels:
- Redfall Twitter/X or Bethesda Support site.
- DownDetector or Steam status pages for outages.
Forums like TrueAchievements report spikes during peak hours or post-update. Wait 1-2 hours if widespread.
When to Contact Bethesda Support
If all steps fail, submit a ticket:
- Visit help.bethesda.net.
- Select Redfall > Technical Issues > Arknet error.
- Provide logs (found in %appdata%\Redfall on PC), platform, steps tried.
Support is responsive, often resolving account/server-side issues.
Preventing Future Arknet Errors
Proactive habits keep Redfall smooth:
- Enable auto-updates on all platforms.
- Maintain stable internet (use QoS router settings for gaming).
- Regularly verify files post-patch.
- Monitor patch notes for known issues.
Redfall’s ongoing support has reduced error frequency since launch.
Frequently Asked Questions (FAQs)
Why does Redfall require online connection for solo play?
Arkane implemented always-online for anti-cheat and cross-progression, though offline mode was promised (status unconfirmed as of last patches).
Is the Incompatible Build error server-side?
Often client-side (outdated files), but server mismatches occur during rollouts.
Can I play Redfall offline after fixing?
No, always-online persists; errors recur without connection.
How long do updates take on Xbox?
Typically 5-20 GB; download varies by internet speed.
Does this affect achievements?
Yes, connection blocks progress syncing.
References
- Redfall: How to fix Incompatible Build Error — Prima Games. 2023-05-01. https://primagames.com/gaming/redfall-how-to-fix-incompatible-build-error
- Redfall Arknet Connection Lost: How To Fix — EarlyGame. 2023-05-01. https://earlygame.com/gaming/redfall-arknet-connection-lost-fix
- How to Fix Incompatible Build Error in Redfall — Attack of the Fanboy. 2023-05-01. https://attackofthefanboy.com/guides/how-to-fix-incompatible-build-error-in-redfall/
- Arknet Connection Lost – Redfall — TrueAchievements Forum. 2023-05-01. https://www.trueachievements.com/forum/viewthread.aspx?tid=1466535
- How to Fix “ARKNET CONNECTION LOST” in Redfall — YouTube (Gaming Guide). 2023-05-01.
- How to fix the “Arknet Connection Lost” error in Redfall — Upcomer. 2023-05-01. https://upcomer.com/how-to-fix-the-arknet-connection-lost-error-in-redfall/

