How to fix GameGuard error 340 in Helldivers 2

✓ At a glance

To fix GameGuard error 340, try the following:

• Check your internet connection.
• Open permissions for Helldivers 2 and GameGuard in your Firewall and Antivirus software.
• Disable the use of proxy servers on your system.
• Update your network adapter’s IPv6 drivers.

Being unable to connect to a game due to an error really stinks, plain and simple. Especially when the issue feels like it’s out of your control. Those of us who enjoy Helldivers 2 are no strangers to launch errors, often caused by GameGuard and other services. One such error, coded as Error 340, has been plaguing players after almost any update. Luckily, there are a few ways to get around and fix the issue.

How to fix GameGuard Error Code 340

The GameGuard error 340 can hit players trying to launch Helldivers 2, especially after a recent update. This error seems to be linked to internet connectivity settings getting reset after a patch, most often (but not always) tied with Anti-virus or Firewall software. Here’s a few solutions that you can try:

• Check your internet connection
• Open Firewall or Antivirus for GameGuard update
• Disable proxy server use
• Update IPv6 drivers

Check your internet connection

You may be encountering this error due to the simple fact that your internet is not working properly. Check your connection and try restarting your router. If the internet issues persist, get in contact with your ISP to report the problem.

Open Firewall or Antivirus for GameGuard update

Either your Firewall or Antivirus software could be blocking access to Helldivers 2 or GameGuard. Even if you’ve set up permissions before, they can sometimes be reset after an update. Check your software and grant permissions where applicable, then try re-downloading the updates and verifying your game files.

Disable proxy server

A proxy server setting could be blocking your access to the game. Here’s how you can check if this setting is disabled on your system:

• Go to your Settings and type Proxy Settings in the search bar.
• Look under the Manual Proxy Setup section and see if the Use a Proxy Server is toggled On or Off.
• If it’s On, switch it to Off and save your changes.

Update IPv6 drivers

Another possible solution is that your IPv6 drivers are not up to date. That’s an easy fix, here’s what you have to do:

• Open the Device Manager from your PC’s Settings window.
• Scroll down the list and find Network Adapters, then expand that section by pressing on +.
• Find your system’s main network adapter (usually one with a unique name) and right-click.
• Select the Update Driver option.
• Then, still in Device Manager, select the Action drop-down menu from the top of the window and select Scan for Hardware Changes.
• Let the system complete the proces, then restart it.