Minecraft “Failed to Authenticate Your Connection”: How to Fix It

If Minecraft shows “Failed to authenticate your connection” when you join a server, the server could not verify your current game session. The fastest fixes are usually to restart Minecraft and the Launcher, refresh your Microsoft account sign-in, and then check whether the problem affects one server or every server.

Before changing anything, isolate the problem

Try a second known-working server and confirm that your internet connection works normally. Minecraft also requires compatible editions for multiplayer: Java Edition connects to Java servers, while Bedrock Edition connects to Bedrock servers. The current Minecraft multiplayer requirements explain the edition, version, account, and network basics.

If only one server fails while other servers work, skip to the server-specific section below. If several servers fail, work through these fixes in order.

1. Fully close Minecraft and the Launcher

A stale game session can remain active after the game window closes. Exit Minecraft and the Minecraft Launcher completely. On Windows, open Task Manager and end any remaining Minecraft Launcher or Java game processes, then reopen the official Launcher and start the game again.

2. Sign out and sign back into the Minecraft Launcher

Minecraft’s current support documentation specifically recommends signing out and back in when you need to reset the connection to authentication services. In the Launcher, open the account menu in the upper-left area, choose Log out, then use Microsoft Login to sign back into the account that owns Minecraft. See the official Microsoft account sign-in reset instructions.

3. On Windows, make sure the same account is used across Minecraft services

The Launcher works with Microsoft and Xbox services to validate ownership and online features. Minecraft Help recommends checking that the Launcher, Microsoft Store, and Xbox app are using the correct Microsoft account. If one app is signed into a different account, sign out there and sign back in with the account that owns Minecraft. The official Launcher troubleshooting guide covers this account check.

4. Use a server-supported Minecraft version

For a normal, up-to-date server, select Latest release in the Launcher and update the game before trying again. If the server explicitly requires an older release or a particular modpack, use the version specified by that server instead. A version mismatch usually produces a different message, but confirming the version removes one common multiplayer failure from the equation.

5. Try Direct Connection with the exact server address

In Java Edition, open Multiplayer and choose Direct Connection, then enter the server address provided by the operator. Minecraft officially supports both Direct Connection and saved server entries. This does not repair an authentication outage, but it can rule out a stale or mistyped saved entry. See Minecraft’s Java Edition server-joining instructions.

6. Reset the local network only if account fixes did not help

If websites or other online games are also behaving oddly, restart your router normally with its power switch or by unplugging power briefly and reconnecting it. Do not press a recessed Reset button; that can restore factory settings on many routers.

On Windows, you can also open Command Prompt as administrator and run:

ipconfig /flushdns

Microsoft includes this command in its official Windows network troubleshooting steps. Flushing DNS is most relevant when name resolution or recent network changes are involved; it is not a substitute for refreshing an invalid Minecraft account session.

If the error happens on only one Minecraft server

When other servers work, the failing server is the likely source of the problem. Confirm its current address, required Minecraft version, maintenance status, and whether other players can connect. If the server was recently restarted or changed authentication settings, contact its administrator and provide the exact error message and the time it occurred.

A server-side authentication or configuration problem cannot be repaired by repeatedly reinstalling Minecraft on your PC. Likewise, if several unrelated players suddenly report the same issue, check Minecraft/Xbox service information through the official Minecraft multiplayer troubleshooting page before changing more local settings.

Quick checklist

• Test a second server to determine whether the failure is server-specific.
• Fully close Minecraft and the Launcher, then reopen them.
• Log out of the Launcher and sign back into the correct Microsoft account.
• On Windows, verify the same account in the Microsoft Store and Xbox app.
• Use the server-supported game version and re-enter the exact server address.
• Only then try local network steps such as restarting the router or flushing DNS.