Starting on October 1, 2025, the Epic Online Services used in Megaton Musashi W: Wired will undergo a security certificate update. If the new certificate is not installed on your Windows system, online play on the Steam version may become unavailable.

Please follow the steps below to avoid this issue.

• ●Keep Windows up to Date
  By installing the latest Windows updates, the new certificate will be installed automatically.
  
• ●Update the Epic Games Launcher
  If you have the Epic Games Launcher installed, please make sure it is updated to the latest version.
  
• ●Install the Certificate Manually (Only If Necessary)
  If automatic updates are not available or the certificate is missing, you can add it manually by following the steps below.
  Open Command Prompt and run the following command:

  curl https://account-public-service-prod03.ol.epicgames.com/account/

For further details, please check the information provided here.

If the issue persists after following the above steps, please contact Customer Support.