How do you fix bad login on Minecraft?
Fix “Connection Lost, Failed to login: Bad login”
- Log out of Minecraft.
- Close Minecraft, Technic Launcher, FTB Launcher, or whichever launcher you are using.
- Reopen Minecraft.
- Type your username and password, and login.
- Try connecting to your server again.
- If it doesn’t work, continue to the next section.
Why do I keep losing connection to Minecraft server?

Possible solutions are: Check that your network connection is enabled, and that no programs are blocking outgoing connections. Try disabling any existing firewall program, or changing its configuration options. Restart your modem/router.
How do I fix Minecraft failed to login the authentication are currently not reachable?
Restart your game: Close the game completely and launch it again. Once the game restarts try joining a server and it should start working again. Update your game: The game usually auto-updates itself through the launcher. In case you missed an update then you can also download it from the official website of Minecraft.
How do you fix a bad login on Tekkit?
Solution 1: Re-Login the Launcher

- Expand the menu and click on the logout.
- Then close the launcher.
- Now open the launcher and uncheck the option of Remember Me.
- If not, log out of the launcher and then close it.
- Then login to the site using your credentials and wait for 5 minutes.
How do I fix failed to login null Technic launcher?
Try quitting the game, then logging out of the launcher and logging in again. After that, everything should be fine.
How do I turn on FireWall for Minecraft?
Add MC Server to FireWall
- Step 1: Next Choose Inbound Rules.
- Step 2: Select New Rule.
- Step 3: Choose the Kind of Rule We Are Using.
- Step 4: Choose What Kind of Program.
- Step 5: Choose Kind of Connection Allowed.
- Step 6: Make Sure All Options Are Checked.
- Step 7: Name That Rule!
- Step 8: Allowing Certain Ports.