[Solved] Lost Ark Authentication Failed Error 10010

You can’t connect to Lost Ark’s server and experience the authentication failed error 10010. That can be frustrating. But not to worry. This is one of the server issues commonly occuring on Lost Ark. You can fix it by following the methods below.

Try the seven methods below one by one until you find the one that resolves the error:

Method 1: Run Steam as administrator
Method 2: Verify integrity of game files
Method 3: Unlink and Relink your Steam and Amazon accounts
Method 4: Change your DNS
Method 5: Use a VPN
Method 6: Disable antivirus software
Method 7: Enable TLS 1.2

Method 1: Run Steam as administrator

The easiest method to fix the Lost Ark server authentication failed error 10010 is to restart your PC and run Steam as administrator. To do this, follow these steps:

1) Restart your PC.

2) On your keyboard, press Win+S (the Windows logo key and the S key) at the same time to open Search.

3) Type “steam” into the search box, then right-click Steam from the result and click on Run as administrator.

4) Log in to Steam, if required.

5) Launch Lost Ark from your Steam Library and check to see if the 10010 error is fixed or not.

If Method 1 doesn’t work for you, continue to try Method 2.

Method 2: Verify integrity of game files

Corrupted or missing game files can cause the Lost Ark error 10010. To fix the error, you can try verifying the integrity of game files on Steam. After that, any corrupted or missing files will be repaired and restored. To do this, follow these steps:

1) Launch Steam.

2) Right-click on Lost Ark in your Library and then select Properties.

3) Click the Local Files tab and click the Verify integrity of game files… button. Then Steam will start verifying the game files. It may take several minutes for the process to complete. Please wait until the process is complete.

4) Once done, restart your computer and see if it resolves the server authentication failed error.

If Method 2 doesn’t work for you, continue to try Method 3.

Method 3: Unlink and Relink your Steam and Amazon accounts

If you have linked your Steam and Amazon accounts, unlinking and relinking them may help fix the 10010 error.

Firstly, unlink your Steam and Amazon accounts.

1) Go to Account Settings on the Amazon Games website.

2) Select Unlink account, and then select Confirm.

Secondly, link your Steam and Amazon accounts again.

1) Go to Account Settings on the Amazon Games website.

2) Select Link your Steam account.

3) Sign in with your Steam credentials.

After that, launch Lost Ark from Steam and check to see if the 10010 error is fixed or not.

If Method 3 doesn’t work for you, continue to try Method 4.

Method 4: Change your DNS

To fix the Lost Ark server authentication failed error 10010, you can try changing your DNS to google’s public DNS, which is good for playing games. Here’s how to do it:

1) On your keyboard, press Win+I (the Windows logo key and the I key) at the same time to open the Windows Settings window.

2) Select Network & Internet.

3) Click on Change adapter options.

4) Right-click on the network you’re currently using and select Properties.

5) Select Internet Protocol Version 4 (TCP/IPv4) and click on Properties.

6) Select Use the following DNS server addresses, then change the Preferred DNS server and the Alternate DNS server as follows:

Preferred DNS server: 8.8.8.8
Alternate DNS server: 8.8.4.4

7) Click OK to save the changes.

8) Restart your computer.

9) Launch Lost Ark and check to see if the error 10010 is fixed.

If Method 4 doesn’t work for you, continue to try Method 5.

Method 5: Use a VPN

Using a VPN can help fix server issues like the authentication failed issue. So you can try using a VPN to fix your Lost Ark authentication failed error 10010.

If you don’t have a VPN, you can search for a trustworth one, for example, NordVPN.

If you already have a VPN, try changing the region to a different one.

Method 6: Disable antivirus software

Antivirus software can prevent you from connecting to Lost Ark’s server. Kaspersky is one of those antivirus services reported that can cause the Lost Ark error 10010.

If you have any antivirus software running, disable them temporarily then check to see if you can connect to Lost Ark’s server.

If Method 6 doens’ work for you, continue to try Method 7.

Method 7: Enable TLS 1.2

To play Lost Ark, you need to have protocol TLS (Transport Layer Security) 1.2 enabled. If TLS 1.2 is disabled on your computer, the server authentication failed error 10010 can occur. In that case, enabling TLS 1.2 can fix the error.

On Windows 7, TLS 1.2 is disabled by default. That’s why many Windows 7 users have reported the 10010 error. If you’re using Windows 7, to fix the error, you can try enabling TLS 1.2 manually.

Here’s how to enable TLS 1.2 on Windows 7:

Important: The following steps require you to modify the registry. Modifying registry incorrectly can cause serious system issues. It’s recommended you back up your registry before modifying. In case any issue occurs, you can restore the registry.

1) On your keyboard, press Win+R (the Windows logo key and the R key) at the same time to invoke the Run box.

2) Type “regedit” in the Run box and click OK. This will open the Registry Editor.

3) Go to the following:

HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Control > SecurityProviders > SCHANNEL > Protocols

4) Right-click on Protocols and select New > Key from the drop-down menus.

5) You’ll see a new key named “New Key #1” show up under Protocols. Rename it to “TLS 1.2”.

6) Right-click on “TLS 1.2” and select New > Key.

7) Again, rename the new key to “Client

8) Right-click on “Client” and select New > DWORD (32-bit) Value. This will create a new value in the window to the right named “New Value #1”.

9) Rename the new value to “DisabledbyDefault” and press Enter. Note ensure the value is 0x00000000(0).

Then you should see the entries shown like this:

10) Close the Registry Editor and restart your computer. Then check to see if the Lost Ark error 10010 is fixed.

On Windows 10 or higher, TLS 1.2 is enabled by default. You can check if it’s disabled. If it’s disabled, you can follow the steps above (for Windows 7) to enable it.

To check if TLS 1.2 is enabled on Windows 10 or higher, follow these steps.

1) On your keyboard, press the Windows logo key.

2) Type “internet options” and select Internet Options from the result.

3) Go to the Advanced tab and check if the box next to Use TLS 1.2 is checked. If it’s checked, it means TLS 1.2 is enabled.

Hopefully you can fix the Lost Ark server authentication failed error 10010 with the above steps. If you have any questions, feel free to drop a comment below. I’ll get back to you ASAP.

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