How To Fix "Failed To Verify Username" - Minecraft Server

Running into the “Failed to Verify Username” error while trying to join a Minecraft server can be frustrating. This issue usually pops up when the server can’t properly check player accounts with Mojang’s authentication system.

It’s most common on cracked or offline servers, but even legitimate setups can run into it due to misconfigured settings or network hiccups. The fix is usually straightforward once you know where to look. In this guide, we’ll show you how to fix "Failed to verify Username" Minecraft Server and cover:

• Adjusting online/offline server mode

• Restarting sessions and client

• Checking authentication servers

• Fixing common misconfigurations in server.properties

What Is The "Failed To Verify Username" Error?

The “Failed to Verify Username” error is an error that blocks your Minecraft client from joining a server by failing to confirm your username through the authentication system. It happens when the game cannot verify your account with the authentication servers. This stops you from joining a server, often showing extra checks like verify username or verify you are human to protect the security of your connection before proceeding.

Why Does The "Failed To Verify Username" Error Happen?

• The server is running in offline mode, so usernames aren’t being verified.

• The same username is logged in from another Minecraft client or PC.

• Temporary issues with the Mojang authentication servers.

How To Fix The "Failed To Verify Username" Error

• Log out of your account through your launcher, and then log back in to your account and try to connect again.

• If you are using a non-premium account. Make sure to disable online mode, restart your server, and the issue should be fixed.

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Updated on: 18/09/2025