[7 Fixes] Java Lang Error: DecoderException: Failed to get registry access: level was null

[7 Fixes] Java Lang Error: DecoderException: Failed to get registry access: level was null

Are you getting the following error message while trying to open the Minecraft launcher for your Aternos server:

This error is easy to fix with a few easy steps. I am giving you some valuable instructions which you can follow:

Step 1 - Allow Java in Firewall Settings by following below steps -

• From search bar in your PC, type “Windows Defender Firewall” and open it
• From the left hand panel, select “Allow an app or feature through Windows Defender Firewall”
• Click on “Change Settings”
• Make sure that ”javaw” and “Java(TM)” (they can be multiple) should be Private and Public
• Click on OK

Step 2 - Uninstall and Re-Install Java:

• Go to Control Panel and uninstall Java
• Note: Ensure to check the system type in My Computer by right clicking over it before installing
• Install Java in your PC
• Now go to this path: This PC – C Drive – Program Files – Java – Copy folder name “jre1.8.0_51”
• Open Run Command and type %appdata% and click on OK
• Follow this path: C:\Users\Hp\AppData\Roaming\.tlauncher\starter\jre_default and paste the copied folder

Step 3 – Download and Install Older Version of Minecraft

Step 4 – Clear Host Cache In Web Browser and Computer

Clear DNS Host Cache from Google Chrome:

• Open Google Chrome
• In address bar, enter “chrome://net-internals/#dns” and press Enter
• In DNS, enter domain name and click Lookup
• Tap on “Clear host cache”

Clear DNS From Command Prompt:

• In Windows search, type “Command Prompt”
• Right click over it and select Run as administrator
• In Command Prompt, enter command “ipconfig /flushdns” and press Enter

Step 5 – Use Whitelist or Allowlist

• Login to Aternos account
• Go to your server
• Go to “Options” from the left hand pane
• Turn on Cracked
• Turn on in front of “Allowlist” (Note: Allowlist and Whitelist are same)
• Also, try to turn off Allowlist once to see which is resolving this issue

Step 6 – Make Your Minecraft Server Online

Step 7 – Server Version and Mods Version Should Be Same

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Java error in Aternos, Failed to get registry access Minecraft, level was null Aternos server, Java Lang Error, Decoder Exception Failed to get registry access,

[raffasyazubairargani]

internal exception failed to decode packet clientbound/minecraft update recipe
Can you help me with this error message on aternos?