--- title: "Failed to verify username, Invalid session and Bad login errors" url: https://help.endercloud.in/docs/failed-to-verify-username category: "Minecraft Hosting › Troubleshooting & Performance" type: Troubleshooting tags: ["connection", "cracked", "login", "players", "troubleshooting"] keywords: "failed to verify username!, failed to log in: invalid session, invalid session (try restarting your game and the launcher), bad login, authentication servers are down, online-mode, cracked launcher, tlauncher, offline mode, velocity, bungeecord, can't join server, login error, kick on join, you are not whitelisted on this server, failed to verify username, invalid session, can't join failed to verify, minecraft login error, kicked on join" difficulty: beginner time: "5 minutes" updated: 2026-11-14 source: Endercloud Knowledge Base (official) --- # Failed to verify username, Invalid session and Bad login errors > These errors mean Minecraft's login check failed. Usually the player's launcher session expired, they use a non-premium launcher, or a proxy network is set up wrong. When a player is kicked with `Failed to verify username!`, `Failed to log in: Invalid session (Try restarting your game and the launcher)` or `Bad login`, the server could not confirm their Minecraft account with Mojang's login servers. Your server is working; the problem is the player's login or how your server's login mode is set up. ## Why it happens - **The player's login session expired.** Launchers keep a login token that can go stale, especially after the game has been open for a long time or the player switched accounts. - **The player uses a non-premium (cracked) launcher.** Your server has `online-mode=true`, which only lets in players who own Minecraft Java Edition and are logged in to a real account. - **A proxy network is set up wrong.** On Velocity or BungeeCord, the proxy does the login check, and the servers behind it must be set up for that. - **Mojang's login service is having a problem.** Then everyone gets the error at once, often with *"Authentication servers are down"*. ## How to fix it ### 1\. If only one player gets the error 1. Fully close Minecraft **and** the launcher, then open them again. 2. If that doesn't help, log out of the account in the official launcher and log back in. 3. Make sure they are using the official launcher or a launcher that logs in with a real Microsoft account. ### 2\. If the player doesn't own Minecraft With `online-mode=true` they cannot join. That is the safe default. You can switch the server to offline mode, but then anyone can join with any name, including yours, so you must add a login plugin. Read [How to enable offline (cracked) mode](/docs/how-to-enable-offline-cracked-mode) and [SkinsRestorer and login plugins](/docs/skinsrestorer-and-login-plugins-for-offline-servers) first. ### 3\. If you run a proxy (Velocity or BungeeCord) - The **proxy** should have online mode on. - The **servers behind the proxy** need `online-mode=false` in server.properties, plus player forwarding switched on. On Paper with Velocity that is the `proxies.velocity` section in `config/paper-global.yml` with the same secret as the proxy. With BungeeCord it is `bungeecord: true` in `spigot.yml`. - Players must join through the proxy's address, not the backend servers directly. Full setup: [Velocity and BungeeCord proxy network](/docs/velocity-and-bungeecord-proxy-network). ### 4\. If every player gets it at once Mojang's login servers may be down. Wait a while and try again. Don't switch to offline mode just for this, because it opens your server to anyone. ## A different kick: "You are not whitelisted on this server" This is not a login failure. New Endercloud Minecraft servers start with the whitelist turned on (`white-list=true` in server.properties), so only listed players can join. Add each player with `whitelist add PlayerName` in the **Console**, or from the **Players** tab, and they can join straight away. If you want anyone to join, run `whitelist off`. See [Whitelist, OP and ban players](/docs/whitelist-op-and-ban-players). ## Frequently asked questions **Q: Can Bedrock players get this error?** Bedrock players join Java servers through Geyser, and Floodgate lets them in without a Java account. If Bedrock players are kicked, check your Geyser and Floodgate setup: [Geyser and Floodgate guide](/docs/geyser-and-floodgate-java-bedrock-crossplay). **Q: Is offline mode safe?** Only with a login plugin and a whitelist or strong rules. Without one, anyone can join as an operator's name and take over the server. **Q: Is this an Endercloud problem?** No. The check happens between the player's game and Mojang. If you have tried everything above and are still stuck, [open a ticket](https://billing.endercloud.in/tickets/create) and we will check your server's settings.