5 Ways to Fix the “Failed to Login The Authentication Servers are Currently Not Reachable” Minecraft Error

Many Minecraft players have reported they can’t log in to servers because of an “authentication servers are currently not reachable” error message. For example, this is what one Minecraft player said: “I tried to log in a few days ago, but was greeted with this error message. No matter what I try, I always receive the same: ‘Failed to log in: The authentication servers are currently not reachable.‘” This is how you fix the “Failed to login: The authentication servers are currently not reachable” Minecraft game error on Windows PCs.

Flush the DNS Cache

Some players say they’ve fixed the “Failed to login: The authentication servers are currently not reachable” Minecraft error by flushing the DNS cache. Applying this potential fix might clear corrupted DNS cache data. You can flush the DNS cache with a Command Prompt command like this:

1. Activate the search tool by pressing its Windows logo + S key combination.
2. Enter cmd into the search tool.
3. Open Command Prompt with elevated privileges by clicking the Run as administrator option for that search result.
4. Input the ipconfig /flushdns command and press Return.

The flushdns command

Disable Internet Protocol Version 6

Disabling Internet Protocol Version 6 is another confirmed way to fix the “Failed to login: The authentication servers are currently not reachable” Minecraft error. If your router only partially supports IPv6, then this troubleshooting method might work. These are the steps for disabling Internet Protocol Version 6:

1. Activate the Run accessory using the Windows logo + R keyboard shortcut.
2. Input ncpa.cpl into Run and select OK.
3. Right-click the internet adapter to select a Properties context menu option for it.
4. Then, unselect the checkbox for Internet Protocol Version 6.
   
   

   The Networking tab

5. Click OK to finish.

Edit the Hosts File

Some players have fixed the “Failed to login: The authentication servers are currently not reachable“ Minecraft error by editing the hosts file. The hosts file is one that maps domain names to IP addresses. Try editing the hosts file as follows:

1. Go to the C: > Windows > System32 > drivers > etc folder path in File Explorer.
2. Right-click the hosts file to select the Open with and Notepad options.
3. Delete the authserver.mojong.com and session.minecraft.net text lines from the file.
   
   

   The Hosts file

4. If the hosts file includes any text lines for antivirus software, such as mssplus.mcafee.com, delete those as well.
5. Click on the File menu to select Save.

Adjust Firewall Permission Settings for Minecraft

Firewalls can block games from establishing connections. So, make sure Minecraft is allowed through Windows Defender Firewall. To do that, you should select the Public and Private checkboxes for Minecraft entries in that firewall’s allowed list, like this:

1. Activate the Windows search tool.
2. Enter the firewall keyword and select Windows Defender Firewall.
3. Next, click Allow an app or feature through Windows Defender Firewall.
4. Press the Change settings button.
5. Select the Public/Private checkboxes for all the Minecraft entries in the allowed list.
   
   

   The allowed apps Windows Defender Firewall

6. Click on OK to apply the new firewall settings.

Change Your DNS Server to Google

Finally, try changing your DNS server to Google to fix the “Failed to login: The authentication servers are currently not reachable” Minecraft error. Your PC’s default DNS might not be entirely reliable for looking up Mojong servers. These are the steps for setting a Google DNS server:

1. First, go through steps one to three for resolution two to bring up the Networking tab.
2. Double-click Internet Protocol Version 4 on that tab.
3. Select the radio button with the Use the following DNS addresses label.
4. Type the value of 8.8.8.8 into the Preferred DNS box.
5. Enter the 8.8.4.4 value inside the Alternative DNS box.
   
   

   The Use the following DNS server addresses

6. Click OK in the Internet Protocol Version 4 window.

The troubleshooting methods covered here are widely confirmed ways to fix the “Failed to login: The authentication servers are currently not reachable” Minecraft error. So, applying them will probably fix that Minecraft error for most players. If you need more potential fixes, consider sending a support ticket to the game’s help service from this contact page.

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