warningConnection ErrorsAffects: All versions
How to Fix Failed to Verify Username / Bad Login
Fix Bad Login by restarting the launcher to refresh your session token, or waiting if auth servers are down.
Quick Fix
Restart the Minecraft launcher to refresh your session. If authentication servers are down, wait.
Error Message
Failed to verify username! / Bad loginHow to Fix
1
Close Minecraft completely and restart the launcher
2
Log out and log back into your Minecraft account in the launcher
3
Check Mojang/Microsoft authentication server status at status.mojang.com
4
Wait if authentication servers are down
5
Ensure your system clock is accurate (authentication uses time-based tokens)
Common Causes
- Minecraft session expired
- Authentication servers down
- Trying to join online-mode server with cracked client
- Account token expired or invalidated
Diagnostic Steps
- Close Minecraft completely
- Restart the launcher
- Log out and back in
- Try connecting again
FAQ
Why does this happen randomly?
Your session token expires after some time. Restarting the launcher refreshes it. It also happens when auth servers have issues.