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Killing Floor 3 (KF3)

Hydra Error and How to Fix

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★ Disclaimer: Our guides were written before the Rearmament update, so some information may be outdated. We appreciate your support!
News: Crossplay | Game Pass | Roadmap
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Killing Floor III - Hydra Error

The Hydra Error is one of the client-to-server errors that players can receive in Killing Floor 3 (KF3). Read on to see the fix for the Hydra Error, as well as the cause for it here!

How to Fix Hydra Error

Return To The Title Screen

Killing Floor III - Return to Title

In order to resolve the Hydra Error, return to the title screen to force the game's client to update and reset itself. This is usually enough to resolve the Hydra Error afterwards.

Restart Your Game

Killing Floor III - Restart Game

Alternatively, a more decisive way to ensure that your game client resets is by completely restarting your game to let the client fully load and update itself, especially when using a platform like Steam.

Turn Crossplay On or Off

Killing Floor III - Crossplay Option

Another way to work around the issue is by toggling your Crossplay to the other option, as that tends to refresh your connection to the Killing Floor 3 servers, which may resolve the issue.

What Causes Hydra Error

Client Is In A Bad State

Killing Floor III - Servers Are Bad

The Hydra Error seems to be caused by the client being in a bad state when attempting to reach the Killing Floor 3 servers.

This usually means that your client may be outdated, or is unable to reach the Killing Floor servers.

Killing Floor 3 Servers Are Down

Another known cause of the Hydra Error is if Killing Floor 3's servers are actually down, either for maintenance or if there are server issues.

If this is the case, the best you can do is to wait out the maintenance and check back later. See our Server Status guide to check if Killing Floor 3 servers are currently online.

Server Status | Are Servers Down?

Killing Floor 3 Related Guides

Killing Floor 3 Bugs and Issues

List of Known Bugs and Issues

All Known Bugs and Issues

List of Known Bugs and Issues
Missing Rewards for Elite Nightfall Edition Matchmaking Not Working
Stuttering and Frame Drops Hydra Error
Frequent Crashing Out of Video Memory
Failed to Authenticate Error Unable to Load Profile Data

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